Read all Ahadith in prescribed punishments (kitab al-hudud) by sunan abu dawood

Ikrimah said: Ali burned some people who retreated from islam. When Ibn Abbas was informed of it, he said: If it had been I, I would not have then burned, for the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم said: Do not inflict Allah’s punishment on anyone, but would have had killed them on account of the statement of the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم. The Messenger said: Kill those who change their religion. When ‘All was informed about it he said: How truly Ibn Abbas said!

Abdullah (bin Masud) reported the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم as saying: The blood of a Muslim man who testifies that there is no god but Allah and that I am the Messenger of Allah should not be lawfully shed but only for one of three reasons: married fornicator, soul for soul, and one who deserts his religion separating himself from the community.

Narrated Aishah, Ummul Muminin: The Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم Said: The blood of a Muslim man who testifies that there is no god but Allah and that Muhammad is Allah's Messenger should not lawfully be shed except only for one of three reasons: a man who committed fornication after marriage, in which case he should be stoned; one who goes forth to fight with Allah and His Messenger, in which case he should be killed or crucified or exiled from the land; or one who commits murder for which he is killed.

Abu Burdah said on the authority of Abu Musa: I went to the Prophet صلی ‌اللہ ‌علیہ ‌وسلم while two men who were Ash’ arIs were with me. One of them was on my right and the other on my left side. Bothe of them asked him for employment. The prophet صلی ‌اللہ ‌علیہ ‌وسلم was silent. He asked: What do you say Abu Musa, or Abdullah bin Qais (Abu Musa’s name)? I replied: By him who has sent you with truth, they did not inform me of what they had in their hearts, and I did not know that they would ask for an employment. He said: I have the scene before my eyes that he had his toothstick below his lip which receded. He (the prophet) said: We will never or will not put in charge of our work anyone who asks for it. But go, ye, Abu Musa, or Abdullah bin Qais. He then sent him as a Governor of the Yemen, After him he sent Muadh bin Jabal. When Muadh came to him, he said: come down, and he put a cushion for him. He saw that a man was chained with him. He asked: What is this? He replied: He was a Jew and he accepted Islam. He then converted to his religion, an evil religion. He said: I will not sit until he is killed according to the decision of Allah and his Messenger صلی ‌اللہ ‌علیہ ‌وسلم. He said: Yes, be seated. He said: I will not sit until he is killed according to the decision of Allah and his Messenger صلی ‌اللہ ‌علیہ ‌وسلم. He said it three times. He then commanded for it and he was killed. Both of them then discussed the question of prayer and vigilance at night. One of them, probably Muadh, said: So far as I am concerned, I sleep and I keep vigilance: I keep vigilance and I sleep: I hope for the same reward for my sleep as for my vigilance.

Narrated Muadh ibn Jabal: Abu Musa said: Muadh came to me when I was in the Yemen. A man who was Jew embraced Islam and then retreated from Islam. When Muadh came, he said: I will not come down from my mount until he is killed. He was then killed. One of them said: He was asked to repent before that.

Abu Burdah said: A man who turned back from Islam was brought to Abu Musa. He invited him to repent for twenty days or about so. Muadh then came and invited him (to embrace Islam) but he refused. So he was beheaded.

The tradition mention above has also been transmitted by Abu Musa through a different chain if narrators. But there is no mention of demand of repentance.

Narrated Abdullah ibn Abbas: Abdullah ibn Abu Sarh used to write (the revelation) for the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم. Satan made him slip, and he joined the infidels. The Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم commanded to kill him on the day of Conquest (of Makkah). Uthman ibn Affan sought protection for him. The Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم gave him protection.

Narrated Saad ibn Abu Waqqas: On the day of the conquest of Makkah, Abdullah ibn Saad ibn Abu Sarh hid himself with Uthman ibn Affan. He brought him and made him stand before the Prophet صلی ‌اللہ ‌علیہ ‌وسلم, and said: Accept the allegiance of Abdullah, Messenger of Allah! He raised his head and looked at him three times, refusing him each time, but accepted his allegiance after the third time. Then turning to his companions, he said: Was not there a wise man among you who would stand up to him when he saw that I had withheld my hand from accepting his allegiance, and kill him? They said: We did not know what you had in your heart, Messenger of Allah! Why did you not give us a signal with your eye? He said: It is not advisable for a Prophet to play deceptive tricks with the eyes.

Jarir reported the prophet صلی ‌اللہ ‌علیہ ‌وسلم as saying: When a slave runs away and reverts to polytheism, he may lawfully be killed.