who was the first child born after migration (hijrat)
Abd Allah ibn al-Zubayr Abd Allah ibn al-Zubayr was a member of the Bani Hashim tribe and was born one year and 8 months after the hijra of Muhammad to Medina. As such, he was the first Muslim child born in Medina.[4] He was the cousin of Qasim ibn Muhammad ibn Abu Bakr who, in turn, was the grandfather of Jafar al-Sadiq.[5]