Yahya related to me from Malik from Umar ibn Husayn, the mawla of A'isha bint Qudama, that Abd al-Malik ibn Marwan imposed retaliation against a man who killed a mawla with a stick and so the mawla's patron killed the man with a stick. Malik said, "The generally agreed on way of doing things in our community about which there is no dispute is that when a man strikes another man with a stick or hits him with a rock or intentionally strikes him causing his death, that is an intentional injury and there is retaliation for it." Malik said, "Intentional murder with us is that a man intentionally goes to a man and strikes him until his life goes. Part of intentional injury also is that a man strikes a man in a quarrel between them. He leaves him while he is alive, and he bleeds to death and so dies. There is retaliation for that." Malik said, "What is done in our community is that a group of free men are killed for the intentional murder of one free man, and a group of women for one woman, and a group of slaves for one slave."