Ma'mar bin Rashid معمر بن راشد · The Book on Blood Money

that the Messenger of Allah (ﷺ) said: "The blood of a Muslim man, who testifies that none has the right to be worshipped Allah, is not lawful except for one of three cases: The (previously married or) married adulterer, a life for a life, and the one who leaves the religion and parts from the Jama'ah (the community of Muslims.)

that the Prophet (ﷺ) said: "Indeed, whoever kills a Mu'ahid that has a covenant from Allah and a covenant from His Messenger (ﷺ), then he has violated the covenant with Allah and the covenant of His Messenger, so he shall not smell the fragrance of Paradise; even though its fragrance can be sensed from the distance of seventy autumns."

that the Messenger of Allah (ﷺ) said: "Whoever kills his slave, then we will kill him, and whoever maims his slave, then we will maim him."

from his father, from his grandfather, that the Prophet (ﷺ) imprisoned a man for an accusation, then he let him go.

that the Messenger of Allah (ﷺ) said: "If someone tries to get another's wealth without right, and he fights and is killed, then he is a martyr."