How did Hazrat Hamza accept Islam?

Answer 1

Hamza converted to Islam due after some actions of Amr ibn Hishām, (also known as Abū Jahl أبو جهل) known for his hostility against the Muslims. Hamza, Muhammad's uncle, had returned to the city of Mecca after a hunting trip in the desert. Upon returning, he soon learned that Abu Jahl (an avowed enemy of Islam) had heaped abuse and insults upon Muhammad, who had not responded and walked away from where he had sat in the Haram. Outraged, Hamza dashed to the Kaaba, where Abu Jahl sat with other leaders of Mecca, and began to beat him with his bow while shouting "Are you going to insult him now, now that I am of his religion and vouch for what he vouches for? Hit me if you can!" As the companions of Abu Jahl approached Hamza in an attempt to assault him[1], Abu Jahl feebily cried out from the ground "Leave Abu Umarah, for indeed I insulted his nephew deeply." And he cowered at the feet of Hamza, while his friends could not meet Hamza's eyes. As he departed, he kicked sand back at the men, leaving all shocked at what Hamza had just said, none more so than Hamza himself.[clarification needed]

After that incident, Hamza declared islam, and made a covenant to help Muhammad and to die in the cause of islam[1]