Business letter from Barhūn b. Mūsā Tahertī, from Alexandria, to Nahray b. Nissim in Fusṭāṭ, to be sent to the house of Ibn Isḥāq Ibrahim b. Isḥāq.
Gil (1997: III 116-20).
"The original materials are currently held at Cambridge University, on a long-term loan until 2026.".
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