Muḥammad b. al-Ḥasan al-Daylamī (d. 711/1311–2) was a Zaydī and Ṣūfī scholar. He was born in the Caspian region, a historical centre of Zaydism since the establishment of the community’s first Imāmate in 250/864. The date of his birth is unknown. He travelled to Yemen—which had, by the sixth/twelfth century, become the cultural centre of Zaydism—and sojourned in Ṣanʿāʾ during the reign of the Imām al-Mahdī li-Dīn Allāh Muḥammad b. Muṭahhar (d. 728/1328).

During his residence in Yemen, al-Daylamī wrote Qawāʿid ʿaqāʾid Āl Muḥammad (“Fundamentals of the beliefs of the family of M…