He was the son of Amr ibn Nufayl, a member of the Adi clan of the Quraysh tribe.[1]:296 Zayd's mother had previously been married to his grandfather, Nufayl ibn Abduluzza, so her son from this marriage, al-Khattab ibn Nufayl, was at the same time Zayd's maternal half-brother and paternal half-uncle.[2]:101