Al-Hamza was born in 570 AD., namely in the year of the Elephant. He was our Master Muhammad's foster brother, for a woman called Thwaibah suckled them.
Al-Hamza was brave and strong. He became Muslim in the second year of our Master Muhammad's mission.
The men knew that al-Hamza believed in Islam. So, the Muslims became happy. But the polytheists became sad.
Some Muslims hid their belief in Islam because they were afraid of Quraish. When al-Hamza became Muslim, a new time began - our Master Muhammad's followers became strong, so the Quraish were afraid of them and had a thousand apprehensions about them.