Soon after the battle of Uhud was over, the Prophet, salah allahu ‘alayhi wa salam, immediately inquired about Hamza, may Allah be pleased with him.
A man said, “I saw him under a tree reciting, ‘I am the lion of Allah and His Prophet, O Allah I am innocent of these people (i.e Abu Sufyan and his people) and I seek forgiveness for what they have done.’ “
So, the Prophet, salah allahu ‘alayhi wa salam, went to him and when he saw him dead with his limbs cut off, he began to cry.
He said, “Do we have kafan (a sheet)? So one of the Ansar put a sheet over him.
The Prophet, salah allahu ‘alayhi wa salam, then said, “Hamza, in front of Allah, is the leader of all martyrs on the day of Judgement”
[Al-Hakim said, Isnad Saheeh, and Saheeh by Al-Thahabi]