It is narrated from Mus'ab bin Abdullah al-Zubayri that he said: Sayyidah Zaynab (may Allah be pleased with her) was the eldest daughter of the Messenger of Allah (peace and blessings be upon him), and the cause of her death was this: when she set out from Makkah to emigrate to the Messenger of Allah (peace and blessings be upon him), Habbar bin al-Aswad and another man caught up with her. One of them pushed her, so she fell onto a rock. She was pregnant, so she miscarried and began to bleed. She remained continually in this pain until she died of this very ailment.

It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: When the people of Makkah sent the ransom for their prisoners, Sayyidah Zaynab (may Allah be pleased with her) sent, as ransom for her husband Abu al-As, the necklace that Sayyidah Khadijah (may Allah be pleased with her) had given her at the time of her wedding. When the Messenger of Allah (peace and blessings be upon him) saw it, he (peace and blessings be upon him) was overcome with intense tenderness, and he (peace and blessings be upon him) said (to the Companions): "If you see fit, release Zaynab's prisoner and return her property (the necklace) to her." This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.