Musannaf Ibn Abi Shaybah 39383 — Reports on the emigration

Sayyidah Asma' bint Abi Bakr (may Allah be pleased with her) narrates that she emigrated to the Prophet (peace and blessings be upon him) while she was carrying Sayyiduna Abdullah bin al-Zubayr (may Allah be pleased with him) in her womb. She delivered him at Quba. She did not nurse the newborn until she reached the Prophet (peace and blessings be upon him) and brought him to him (peace and blessings be upon him). He (peace and blessings be upon him) took him and placed him in his blessed lap. The people began to look for a date in order to perform tahnik on him, until they found one and performed tahnik on him. So the first thing to enter his stomach was the saliva of the Prophet (peace and blessings be upon him). And he (peace and blessings be upon him) named him Abdullah.