Al-Haytham bin Adi said: The mother of Abu Bakr (may Allah be pleased with him) was called Umm al-Khayr bint Sakhr bin Amir. When Abu Bakr (may Allah be pleased with him) died, both his parents inherited from him, and both of them had accepted Islam; and the mother of Abu Bakr died before his father.
Hadith Referenceالمعجم الكبير للطبراني / العشرة / 2