Kaʽb al-Aḥbār (d. ca. 652), an early Yemenite Jewish convert to Islam, is widely credited in Islamic sources as a major source of Isrā’īliyyāt (Israelite tales). Scholars have posited that the name Kaʽb al-Aḥbār is the Arabic transcription of Jacob or ‘Aqiba he-ḥaver, either an honorific or a title indicating a scholar in a yeshiva. There is little concrete information about Kaʽb’s life or the circumstances of his conversion. According to Muslim traditions, he arrived in Medina during the caliphate of ʽUmar ibn al-Khaṭṭāb (r. 634–644) and became one of his closest advisers. …