The Birth of Hazrat Ali RA, the 4th caliph of Islam is the key event of the month of Rajab. Hazrat Ali Ibn Abi Talib RA was born on 13th of Rajab according to Hijri Calendar.
Hazrat Ali RA was the cousin and son in law of Prophet Muhammad SAW. Abu Talib and Fatimah RA bint Asad are the parents of Hazrat Ali RA. He was married to the daughter of Prophet Muhammad SAW, Hazrat Fatima RA. One of the famous things about Hazrat Ali RA is, He was the first to accept Islam at the age of 10. He was in the early companions of Prophet Muhammad SAW.