Ahsanabad: a capital named at the moment of sovereignty
Ferishta puts the renaming of Gulbarga at the instant of the usurpation, beside the two classic acts of Islamic sovereignty: "The Khootba was read, and coins struck, in his name... From that period, also, Koolburga, which now became the royal residence, was named Ahsunabad, and became the capital of the first Mahomedan king of the Deccan" [9]. The claim is not merely literary: the city "retained the mint-name of Aḥsanābād", the dynastic name struck into metal long after the court had left [1].
Gulbarga housed the first eight sultans, from Bahman Shah (748-59/1347-58) to Taj-al-Din Firuz Shah (800-25/1397-1422) [1]. In those seventy-five years the state built the machinery it would carry to Bidar: provinces called tarafs under governors called tarafdars, Bidar and Gulbarga each holding a governorship of its own [4]. What changed in the 1420s was not the administrative map but which node on it held the king - and unlike 1347, that moment has no khutba, no coin, no agreed day.
The date nobody can fix
Five years are defensible from sources that can actually be opened. Encyclopaedia Iranica says Ahmad Shah I "made it his capital in 827/1424, changing its name to Moḥammadābād in honor of his son", following Yazdani's 1947 monograph [2], and elsewhere dates the transfer "around 827/1424" [1]; the reference article on Gulbarga fort follows with 1424 [19]. A standard summary gives "Gulbarga (1347–1425) Bidar (1425–1527)" [20]; the article on Bidar fort says 1427, adding that "Firishta records that the reconstruction began in 1429 CE and ended in 1432 CE" [18]. The Encyclopaedia of Islam says flatly that "In 833/1430, he transferred the capital... to Bīdar" [6], as does Helen Philon [24]; a local water history splits the difference at "after his reign was fully established in AD 1427" [25].
Haroon Khan Sherwani argued for the earliest date on documentary grounds. The Burhan-i Ma'asir, he reports, "definitely says that the king moved on to Bidar in the month of Rajah in the second year of his accession i.e.i Rajab 827/ June 1424"; his real anchor is an inscription in the chief mosque inside Bidar fort recording that it was built "as early B27/e4'^4i within two years of Ahmad's accession, by Prince Muhamtnad after whom Bidar began to be caUed Muhatnmadabad" [11]. The transcription errors belong to the digitised page, not the argument.
Ferishta pulls the other way, by silence. In Briggs's translation the foundation carries no year at all, arriving after the Telangana campaign and after a dated 1425 expedition: Ahmad Shah, "having arrived at Bidar, took the amusement of hunting; and coming to a beautiful spot, finely watered, resolved to found a city to be called Ahmudabad" [9]. That sequence cannot accommodate a completed move in 1424, and it is what gives the later datings their warrant. Note the name, too: Ferishta's city is Ahmadabad, after the king, where mint and inscription give Muhammadabad, after his son.
Why the seat moved: four explanations, two documented
Four families of explanation are on offer. Climate and fertility: Bidar was "more salubrious and strategically superior" [1], with "abundant fruit trees" [2]. Strategy: Sherwani held Gulbarga "an unsuiLablc position for the capital" of a kingdom "greatly enlarged during the last seveaty-five yearSi", where Bidar was "much safer, being at the very edge of the Deccan plateau" and "more in the centre of the new dominions" [12]. Escape from faction: Ahmad Shah "tried to distance his rule from different Muslim factions that seem to have prevailed in Gulbarga" [17], or from "the political strife associated with Gulbargā" [6]. And ethnicity, where Philon goes furthest: Bidar "might as well have been built in order to separate the two communities to become the Afaqi capital of the Bahmanis", leaving Gulbarga "the capital for the dominant Dakhini" [24] - a split later named as fatal to the dynasty [8]. Only the middle two rest on documents.
The move of the court was also a move of allegiance. Ahmad Shah built at Gulbarga the mausoleum of his Chishti master Sayyid Muhammad Gisu Daraz, "but in transferring his capital to Bidar, he also transferred his allegiance from the Češtis to the Neʿmat-Allāhis, whom he brought from Kermān" [1]; the Encyclopaedia of Islam dates the two decisions as concurrent [6]. This is a redirection of royal patronage, not the arrival of the Chishtis in the Deccan, who were long established there; Gulbarga kept the shrines and so kept "the most important spiritual center of the kingdom" [24].
Ferishta's own explanation - a hunting party, a well-watered spot - Sherwani declined, seeing "no rcaion why the king should have waited tiU the dramatic chase of the dog" to settle his mind about Bidar's climate [12]. A local version still current has thirsty soldiers shown a spring by a shepherd named Bomkandeshwar, "after whom the village and lake that's still here" are named [25]. These are origin stories for a decision, not evidence of one.
The building in Gulbarga fort, and whether it is a mosque
The great covered hall inside Gulbarga fort is the most remarkable Bahmani building to survive and the least securely identified. It "lacks a courtyard, features five large domes... and 63 smaller ones, and is enclosed on three sides by a U-shaped aisle" [7]. Iranica calls it "Unique among Indian mosques in being entirely covered", its style closer for some observers to "Andalus or Maḡreb than of Persia" [1] - hence the standing comparison with Cordoba in a literature that also notes "The mosque has no open courtyard" [19]. The Indian dossier dates it 1367 and gives its footprint as "38,000 square feet" [17]; the date rests on a stone inscription naming Muhammad I as patron and Rafi' b. Shams b. Mansur al-Qazvini as architect [1].
The Encyclopaedia of Islam refuses to settle the matter - "The precise dating of the mosque and the reasoning behind its revolutionary plan are uncertain" - some trusting that inscription, others arguing the building "dates to after 809/1407, during the reign of Fīrūz, and was conceived primarily as an audience hall (hazār sutūn...)" [7]; Iranica records the earlier doubt that it was "not originally intended as a congregational mosque" [1]. Philon's case is topographic: it stands within a fortified enclosure "that would not allow it to be easily accessible to the population of believers", it "has none of the features of a congregational mosque such as a courtyard, dome, or pavilion for its gate", and the inscriptions naming a mosque were "found in the debris of the fort" and "have no relation to the building" [24]. That is the crux, and the same problem as the transfer date: whether a loose inscription belongs to a standing structure.
A fort of men and a fort of ground
The two citadels embody the difference between the cities. Gulbarga's was raised on the remains of an earlier Warangal fort and "was a nara durg with no natural defenses, dependent on the might of its men"; the Bahmani overhaul answered with mass, "a 50 foot-thick double wall" and "a 90 foot-wide moat with drawbridges completely surrounding its three miles of fortifications". Bidar exploits its site instead: an "irregular, circular fort" welded to a quadrangular city, a six-mile laterite wall on "37 bastions", and "a sophisticated system of gates and sluices that could be used when required to flood segments of the moat" [17]. Briggs's own footnote to Ferishta: Bidar's ditches are "among the most remarkable works in the Deccan. I do not believe it was ever carried by storm" [9]. The curtain walls are credited to "Persian and Turkish architects" working before gunpowder reached the peninsula [18].
Bidar's real signature is water. Beneath the plateau runs the Naubad-Aliyabad karez, "believed to have been constructed during the Bahmani Sultanate in the 15th century" and "among the earliest known qanat systems in India", rare in being "carved through laterite rock" [26]. The technology is imported: qanats - "well-like vertical shafts, connected by gently sloping tunnels" - arrived from Iran, Khurasan and Central Asia with pillared halls, iwans and tilework [8]. One detail cuts against the picture of a triumphant capital: the karez was named for a naubad, "for new abaadi or population", and served "a settlement that was never completed" [25].
Bidar at work: a court, a chancery, and a killing
For what the second capital was actually like there is one outside witness with no dynastic case to make. Afanasy Nikitin, a Russian merchant, was at Bidar about 1470: "Beder is the chief town of the whole of Mahomedan Hindostan", its sultan "a little man, twenty years old, in the power of the nobles", while "Khorassanians rule the country and serve in war" [15]. He describes a palace of seven gates, at each "100 guards and 100 Mahommedan scribes, who enter the names of all persons going in and out", a night watch of a thousand armoured horsemen, and a gulf in which "those in the country are very miserable, whilst the nobles are extremely opulent" [16].
The state was run by Mahmud Gawan, an Iranian who entered the Deccan in trade and rose to chief minister. His madrasa, completed 876-877 (1471-2), is a "rectangular structure covering 68 by 60 meters" around a quadrangle, its east front "framed by two lofty minarets about 100 feet high that were dressed in green-azure majolica" [23]; Iranica compares it to the Timurid madrasa at Khargird and the Registan at Samarqand, and notes from his letters that "he was eager to attract the most learned men of Iran and Iraq to lecture" there [3]. Sherwani describes a thousand cubicles and students given food and clothes "free of cosu" [14]. Aurangzeb's men later took it as a barrack, and an explosion did "damage to one-fourth of the edifice" [23] - dated by Sherwani to 1107/1696 [14], where the reference literature calls that year's damage a lightning strike [22].
Gawan's reforms of 1473 attacked the provincial system directly: he "reorganised the tarafs... increasing the number from four to eight, and distributing them equally among the Deccanis and foreigners" and limited a governor to a single fort - measures that "would not be taken well by many of the nobles" [21]. In 1481 they killed him. Shown a treasonous letter under his seal he answered, "The seal is mine, but not the letter, of which I have no knowledge"; the king, "being at the time intoxicated with wine, had resigned his reason to fury", and had him killed on the spot [10]. Against that stands the chancery he built - 148 letters to Jami, Jalal al-Din Davani, Husayn Bayqara and the Ottoman sultan [5]. Bidar corresponded with Herat, Samarqand and Istanbul, and executed the man who kept the correspondence.
Why the record is this thin
Almost nothing about Ahmad Shah I was written in his own lifetime. Isami's Futuh al-salatin, finished in May 1350, is "the only extant contemporary history of the Bahmanids" - and it stops with the first sultan [5]. The two chronicles on which nearly every account of the transfer depends, Tabataba's Burhan-i Ma'asir and Ferishta's Gulshan-i Ibrahimi, were written 170 to 200 years later for other patrons, and Philon holds that both "had an agenda" [24]. The 1424 date, the name Muhammadabad and the hunting story all arrive through that filter - all but the fort mosque inscription, which is why Sherwani leaned on it [11].
Where non-narrative evidence bears on the question, it embarrasses the chronicles. Ferishta reports that the first Bahmani struck no coins and that Muhammad I first issued gold and silver bearing the creed and the names of the rightly-guided caliphs; Sherwani, working from the Hyderabad Museum cabinet, found the reverse - it holds coins "of practically all the Bahmank" including the first sultan, and "fwt one of them... has the Muslim Creed or the names of ... the apostolic Caliphs" on it [13].
Two cautions follow for anyone using the standard summaries. The Indian dossier is the best short official statement of what each capital was built to do, but it twice calls Bijapur's Gol Gumbaz the second-largest dome in the world, which it is not [17]. And the claim that Ahmad Shah I "converted to Shi'ism" after establishing Bidar [20] is corroborated by nothing higher-tier read here.
Dates in this essay
Transfer of the capital from Gulbarga to Bidar: 827/1424 per Encyclopaedia Iranica (GULBARGA and BIDAR entries, the latter citing Yazdani 1947, pp. 54-56) and H. K. Sherwani, resting on the Burhan-i Ma'asir (Rajab 827/June 1424), the Tazkirat al-Muluk, and an inscription of 827 in the Solah Khamba mosque inside Bidar fort; 1425 in the standard reference summary of the dynasty ('Gulbarga (1347–1425) Bidar (1425–1527)'); 1427 in the reference article on Bidar fort and in The Hindu's karez reporting; 1429-1432 as the span of reconstruction attributed to Firishta, with 1429 sometimes given for the establishment of the capital; and 833/1430 in the Encyclopaedia of Islam THREE and in Helen Philon's lecture. Ferishta's own narrative gives no year and places the foundation after a dated 1425 campaign. Sherwani himself acknowledged a range running from 827/1424 to 830 and argued for the earliest.
Bahmani capital spans: this archive dates the state's first capital from the assumption of sovereign power at Gulbarga/Ahsanabad in 748/1347 (Ferishta: khutba read, coins struck, the city renamed). The end date of the Bidar capital is given as 1527 in one reference summary, while the Encyclopaedia of Islam dates the dynasty's demise to 934/1528; the archive prefers the settlement that extinguished the state.
The great hall in Gulbarga fort: 769/1367-8 on the strength of a stone inscription naming Muhammad I and the architect Rafi' b. Shams b. Mansur al-Qazvini (Haig; followed by Iranica, Hillenbrand and the Indian UNESCO dossier, which dates it 1367); against this, a date after 809/1407 in the reign of Firuz Shah, argued by Helen Philon building on Z. A. Desai and Elizabeth Schotten-Merklinger, who read the building as a hazar sutun audience hall later converted to a mosque. The Encyclopaedia of Islam records the dispute as unresolved.
Mahmud Gawan's madrasa: completed 876 AH (1471/1472) per Archnet and the standard reference article, 877/1472 in Encyclopaedia Iranica's BIDAR entry.
The damage to the madrasa: an explosion during Aurangzeb's use of the building as a barrack, dated to 1656 by Archnet for the appropriation, to 1107/1696 by Sherwani for the blast, and attributed by the reference article to a lightning strike in 1107 AH (1695/1696).
Nikitin's residence at Bidar is given here as 'about 1470'. The traditional dating of his journey is 1466-1472; a recent proposal of 1467-1474 would place him at Bidar from September 1469. Only the abstract of that argument was seen, so the looser date is used.
Where authorities disagree about when a state began or ended, the archive follows one rule — a polity is dated from the assumption of sovereign power in its own capital, and to the settlement that extinguished it — and records the alternatives rather than hiding them.
Open questions
Yazdani, Bidar: Its History and Monuments (Oxford, 1947), is the single most-cited authority for the 827/1424 transfer date, for the Muhammadabad naming and for the Solah Khamba inscription, but no copy was opened for this entry; everything from it here reaches us at second hand through Encyclopaedia Iranica and Sherwani. Do pp. 54-56, 62-66 and 91-100 settle the transfer date and the naming directly?
What does the Solah Khamba Masjid inscription in Bidar fort actually say, and how has it been read? Sherwani cites it for both the date 827 and the naming of the city after Prince Muhammad, but the primary epigraphic publication was not opened, and the digitised text of Sherwani's own page garbles the date figure.
Is the inscription that dates the Gulbarga great mosque to 769/1367-8 in situ, or was it recovered loose from the fort debris, as Philon claims? T. W. Haig's 'Inscriptions in Gulbarga' in Epigraphia Indo-Moslemica (1907-08) was not opened, and this single question is the crux of the entire dating dispute.
What is Helen Philon's full published argument in 'The "Great Mosque" at Gulbarga Reinterpreted as the Hazar Sutun of Firuz Shah Bahmani' (2014)? Only a press report of a lecture could be read here, and her 1430 date for the Bidar transfer likewise rests on reasoning not seen.
What are the exact words of the Burhan-i Ma'asir passage on the move to Bidar? It is quoted here only through Sherwani; T. S. King's translation in the Indian Antiquary (1899) was not opened, so the Rajab 827 wording is unverified at first hand.
Does Ferishta's Persian text in fact name the new city Ahmadabad and in fact give no year for its foundation? Only Briggs's English translation was consulted, through a digitised scan, and both points should be checked against the Persian before being asserted as Ferishta's own.
When did Gulbarga cease to be a mint, and do Bidar-struck coins carry the name Muhammadabad? Iranica records that Gulbarga retained the mint-name Ahsanabad, but no numismatic catalogue was consulted, so the coinage cannot be used here to date the transfer.
Did Firuzabad, the palace city begun by Firuz Shah in 802/1399, or Ni'matabad function as an interim or parallel capital during the 1420s? If either did, 'the transfer' may be the wrong description of what happened, but neither site could be dated against the Bidar move from sources read here.
What did the Bahmani state actually cost and earn? No revenue figures - the yield of the Raichur doab, the taraf assessments, the price of the Bidar building programme - could be verified, and Nikitin's army numbers are the only figures available and are demonstrably inflated.
Do the Encyclopaedia Iranica and Encyclopaedia of Islam accounts of the Chishti-to-Ni'matullahi shift rest on independent readings of the evidence, or on a shared modern study (Eaton's Sufis of Bijapur, or Firouzeh)? Their wording is close enough to raise the question, and neither underlying study was opened.
Is there any Tier A or B basis for the claim that Ahmad Shah I converted to Shi'ism after establishing Bidar? None was found here; Iranica goes no further than noting that Ali's name in his tomb inscriptions may reflect Shi'ite sympathies, and the claim is therefore not made in this entry.
What do the ASI's own protection notifications say for Bidar fort, the Ashtur tombs and the Gulbarga Haft Gumbaz? No ASI site page for any of them could be opened, and no N-KA reference numbers beyond the madrasa's could be checked.