The surname of the mother of Hazrat Abu Bakr (RA) was:
Q1. The surname of the mother of Hazrat Abu Bakr (RA) was:
Answer: Ummul Khair (RA)
Explanation: The surname (kunya) of Hazrat Abu Bakr's mother was Ummul Khair (RA), whose full name was Salma bint Sakhr.