Musannaf Ibn Abi Shaybah 29524 — A group who wound one another's heads

Simak said that Abd al-Rahman bin al-Qa'qa' said: I invited some people to my house. They ate, drank wine and became intoxicated, and they took up the knives in the house. Then, causing an uproar with them, some of them wounded others. They were four people in all; two died and two survived. So Sayyiduna Ali (may Allah be pleased with him) made the blood money binding upon all four of them and reduced it for the wounded by the extent of the wounds they had received.