And Yaʿqūb ibn Ibrāhīm al-Dawraqī narrated to me, saying: Ismāʿīl — meaning Ibn ʿUlayya — narrated to us, from Ayyūb, from Abū al-Zubayr, from Jābir, that a man of the Anṣār, called Abū Madhkūr, freed a slave of his who was to be freed after his death (mudabbar), and the slave was called Yaʿqūb. And he related the ḥadīth with the same meaning as the ḥadīth of al-Layth.