the home of his maternal aunt ʿĀʾishah.

Shuʿayb ibn Isḥāq narrated—from Hishām ibn ʿUrwah, from his father and from his (Hishām’s) wife Fāṭimah—who both said:
“When Asmāʾ emigrated she was pregnant, and she gave birth to ʿAbd Allāh at Qubāʾ.

Asmāʾ also said: ‘Seven years later ʿAbd Allāh came to pledge allegiance to the Prophet ﷺ at the instruction of his father, al-Zubayr. The Prophet ﷺ smiled when he saw him approaching and then accepted his pledge.’”

This is a singular hadith, and its chain of transmission is sound. (1)

Al-Wāqidī reported—through Muṣʿab ibn Thābit, from ʿUrwah’s ward Abū al-Aswad—who said:
“When the Emigrants first arrived, no children were born to them for some time. They began to say, ‘The Jews have put a spell on us,’ and the rumor grew widespread. The first child born thereafter was Ibn al-Zubayr. The Muslims therefore pronounced the takbīr in unison until Medina shook, and the Prophet ﷺ instructed Abū Bakr to recite the adhān in the child’s ears.”

Muṣʿab ibn ʿAbd Allāh likewise related—from his father:
“The sideburns of Ibn al-Zubayr were sparse, and his beard never filled out even when he reached sixty years of age.”

Al-Bukhārī records—on the authority of ʿUrwah—that al-Zubayr mounted his son ʿAbd Allāh on a horse on the Day of Yarmūk when the boy was ten years old and assigned a man to look after him. (2)