Sayyiduna Abu Shurayh Khuza'i (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: Whoever is killed or wounded, he has the choice of one of three things: (1) he may take retribution (qisas), or (2) he may accept blood money (diyah), or (3) he may forgive. If he seeks a fourth option, prevent him. If a person chooses one of these three things and then exceeds after that, then for him is Hellfire, he will abide therein forever.

It is narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: Whoever commits intentional murder, he shall be handed over to the heirs of the slain; if they wish, they may kill him, or if they wish, they may accept blood money. The details of this are: thirty Hiqqahs, thirty Jadh’ahs, and forty pregnant she-camels; this is the blood money for intentional murder. Also, whatever they agree upon in reconciliation will belong to them; this is the heaviest blood money.

Narrated by Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: Whoever kills the murderer after receiving the blood money, I will not forgive him.