(2,533 words)

Bayhaq, the name of an ancient town and district in Khurāsān, in the region of Nīsābūr. The name Bayhaq appears to be an Arabised form of a Persian word whose form and roots cannot be precisely determined, and the ones that have been proposed are all questionable (see Bayhaqī, ʿAlī, 33–34; Yāqūt, 1/804; Tabrīzī, 1/343).

Early History

No reference to Bayhaq can be found in extant pre-Islamic sources. Since the territorial divisions of the Sāsānid empire persisted during the early centuries of Islam, it can be said that, just…

Cite this page
Hamedani, Ali Karam and Waley, M.I., “Bayhaq”, in: Encyclopaedia Islamica, Editors-in-Chief: Wilferd Madelung and, Farhad Daftary. Consulted online on 19 June 2018 <>
First published online: 2013
First print edition: ISBN: 9789004246911, 20131209

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