The claim
Delhi entered the learned network of the Muslim world under the sultans.
The evidence
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The chain of transmitters — passage/muwatta-1-061
A Muwatta hadith with isnad.
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chronicle — place/delhi
Delhi — capital of the sultans then the Mughals in India.
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object — object/mira-mughaliyya
A Mughal mirror — a work of Indo-Islamic craft.
The historians' note
Sources describe Delhi's madrasas and books; it joined the Arabic-and-Persian book world.