The calligraphic roundels of the Sultan Ahmed Mosque, popularly known in the West as the Blue Mosque, are a set of massive circular medallions hung from the four great piers supporting the mosque's central dome in Istanbul. Executed in monumental Jali Thuluth script, each roundel bears one sacred name: Allah, Muhammad, one of the four Rightly Guided Caliphs, Abu Bakr, Umar, Uthman and Ali, or one of the Prophet's grandsons, Hasan and Husayn. Together the seven names, arranged around the piers that literally hold up the dome, stage a visual argument the mosque's own designers intended: that the house of Islam is upheld by God, by his Prophet and by the community's earliest righteous leaders together. They were created during the mosque's original construction, 1609 to 1617, under Sultan Ahmed I and his architect Sedefkar Mehmed Agha, and have been restored more than once since, so their present appearance no longer matches the calligrapher's own original hand exactly.
Facts
Physical Form
MediumSourced to the subject's own accountMonumental Jali Thuluth calligraphy on circular roundel panels, part of the mosque's painted interior decorative program 1 Subject Matter
Depicted SubjectSourced to the subject's own accountThe written names of Allah, Muhammad, the four Rightly Guided Caliphs and the Prophet's two grandsons, Hasan and Husayn, inscribed rather than pictured, in keeping with mainstream Islamic reluctance to render sacred figures visually 1 Devotional FunctionSourced to the subject's own accountPart of an active mosque's working interior, still seen by every worshipper who prays beneath the central dome; the seven names function as a doctrinal statement in monumental form rather than as museum decoration, naming who a worshipper's prayer answers to and who first carried that answer forward. 1 Custody
Current LocationSourced to the subject's own accountSultan Ahmed Mosque, Istanbul, Turkey 2 Current CustodianSourced to the subject's own accountDirectorate of Religious Affairs of Turkey (Diyanet), as an active mosque 2 Custody HistorySourced to the subject's own accountIn continuous use as part of a functioning mosque since the building's 1617 completion, and restored on more than one occasion since, so the calligraphy visible today departs from the original hand of Seyyid Kasim Gubari, who died in 1615 or 1616, close to the year the mosque itself was finished. 2 Rights and Reproduction
Reproduction and CopyrightSourced to the subject's own accountThe calligraphy itself, executed over four centuries ago, carries no copyright as an expression. A modern photograph of the mosque's interior may carry its own separate copyright depending on who took it and when; this atlas describes the work rather than reproducing an image of it. 2 Origins
CreationSourced to the subject's own account Date of CreationSourced to the subject's own account1609 to 1617, during the mosque's original construction 2 Commissioned BySourced to the subject's own account Attributed ToSourced to the subject's own accountSeyyid Kasim Gubari of Diyarbakir 3 Open Questions
DimensionsNot documented in the sources consulted; described only as "massive circular panels" hung high on the four dome piers 1 Sourced to the subject's own accountThe sources consulted for this entry, an encyclopedia article and a visitor-education site, both describe the roundels' scale in prose rather than giving a measured diameter, and no published architectural survey of the mosque's interior fittings could be found. Learn More
Names Instead of Faces
Mainstream Islamic practice holds that God, the Prophet Muhammad, and by extension the Prophet's closest companions should not be rendered as pictures, a restriction rooted in concern that a visual image invites the kind of veneration properly owed to God alone. That leaves a real design problem for anyone building a space meant to honor those same figures: how do you give a worshipper somewhere to look?
The Sultan Ahmed Mosque answers with writing rather than pictures. Its roundels hang exactly where a Christian church of the same era might place a painted image, high on the piers that visually carry the weight of the whole dome, but instead of a face they present a name, rendered so large and in such deliberately monumental script that the calligraphy itself becomes the object worth looking at. Allah, Muhammad, the four Rightly Guided Caliphs and the Prophet's two grandsons are each given their own roundel, arranged so that the structural piers holding up the building and the sacred names holding up the faith read as one and the same image.
The same restriction shows up in other media too: The Message, Moustapha Akkad's 1976 film on the origins of Islam, never shows Muhammad on screen at all, letting his uncle Hamza and his companions carry the story instead. Architecture writes his name in gold; film simply declines to point the camera at him. Two very different technologies arriving, independently, at the same restraint.
A Calligrapher's Last Commission
Seyyid Kasim Gubari, born Cherif Abdallah in the southeastern Ottoman city of Diyarbakir, began his career as a poet before turning to calligraphy, the craft that made his reputation. Legend attached itself to his skill early: he was said to have written an entire chapter of the Quran, in the deliberately minuscule ghobar style, on a single grain of rice, a story meant to signal exceptional control rather than a claim anyone could verify literally. He earned the honorific Seyyid, marking a claimed direct descent from the Prophet, and became recognized in his own lifetime as one of the finest calligraphers the Ottoman world produced.
His largest and most visible commission was also his last. Sultan Ahmed I engaged him to execute the interior calligraphy of the new imperial mosque being built in Istanbul, including much of the dome and, this atlas's own reading of the sources holds, its monumental roundels. Gubari died in 1615 or 1616, essentially as the mosque itself was nearing completion; construction finished and the building opened for worship in 1616 or 1617.
What survives to be seen today is not, strictly, his own hand. The mosque's calligraphy has been restored more than once across four centuries of continuous use, and Wikipedia's own account of the building notes plainly that the present inscriptions no longer match Gubari's original work exactly. His name survives attached to the commission with more certainty than his actual brushwork does, an ordinary fate for monumental calligraphy exposed to centuries of weather, worship and repair, but one this entry states honestly rather than passing off a restorer's later hand as the master's own.
Cross-Tradition Connections
Belongs to Tradition
Depicts
One of the seven roundels bears the name of Abu Bakr, first of the Rightly Guided Caliphs.
Ali, Figures One of the seven roundels bears the name of Ali, fourth of the Rightly Guided Caliphs.
One of the seven roundels bears the name of Hasan ibn Ali, grandson of the Prophet.
One of the seven roundels bears the name of Husayn ibn Ali, grandson of the Prophet.
One of the seven roundels bears the name Muhammad.
Umar, Figures One of the seven roundels bears the name of Umar, second of the Rightly Guided Caliphs.
One of the seven roundels bears the name of Uthman, third of the Rightly Guided Caliphs.
Related To
The two works reach opposite answers about figural sacred art within traditions that both hold reservations about depicting the divine. Dura Europos fills its synagogue walls with painted human and divine action, God shown only by a hand reaching into the frame, while the Blue Mosque's roundels inscribe only names, never images, at all.
Two independent media solving the same prohibition on depicting Muhammad: the roundels write his name instead of picturing him, the film simply never points its camera at him.
The roundels are physically inside the Sultan Ahmed Mosque; this artwork entry covers the calligraphy specifically, the site entry covers the mosque as a whole.
Sources
Open Questions (1 open question)
What Are the Measured Dimensions of the Sultan Ahmed Mosque's Calligraphic Roundels?
Published encyclopedia and visitor-education accounts describe the roundels only in prose, as massive circular panels hung from the four dome piers, without giving a measured diameter or any other numeric dimension, and no published architectural survey of the mosque's interior fittings could be found.
What would resolve this A published architectural survey or conservation report of the Sultan Ahmed Mosque's interior fittings giving the roundels' measured diameter, or a direct measurement taken and published by a future visitor or researcher with access to the mosque's own restoration records.
Ottoman architectural history, historic building conservationThe Divine Script: Decoding the Calligraphy of the Blue Mosque (bluemosque.tr)
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