Sayyidah Fātimah (R) was born five years prior to the Nubuwwah of Nabī (Sallallahu Alaihi Wasallam), and is the youngest daughter of Rasūlullāh (Sallallahu Alaihi Wasallam). (Tabaqāt ibn Sa’d)
Rasūlullāh (Sallallahu Alaihi Wasallam) took responsibility for the upbringing of Sayyidinā ‘Alī (R), who remained in the care of Rasūlullāh (Sallallahu Alaihi Wasallam) from a young age. (Ibn Hishām)