regarding who should begin with the killing, it is possible that the first killer should be executed first because he is earlier, and it is possible that they should draw lots between them. This is the opinion of the Qadi and the school of Al-Shafi'i, because they are equal in their entitlement, so they turn (19) to drawing lots. Whichever of them kills his companion first, whether by rushing (20) or by lot, inherits from him, according to the analogy of the school, provided he has no other heir, and the retaliation falls from him. If he is excluded from his entire inheritance, then the heir of the victim may kill the other. If one of them pardons the other, and then the one pardoned kills the one who pardoned him, he also inherits from him, and the blood money that was due upon him falls. If they both mutually pardon each other in exchange for blood money, they settle the accounts between them for what they are equal in, and the killer of the mother is entitled to the surplus over the killer of the father, because the blood money for the mother is half the blood money for the father. It is also derived that the retaliation falls from both of them due to their equality in entitlement, like the falling (22) of both blood monies if they were equal, and because there is no way to fulfill both of them together (23), and fulfilling one without the other is oppression, so it is not permissible; thus, the falling of the penalty is determined. If each of them has a son who excludes his uncle from (24) the inheritance of his father, then when one of them kills his companion, his son inherits from him, then his son has the right to kill his uncle, and his son inherits from him, and each of the two sons inherits the wealth of his father and the wealth of his grandfather who was killed by his uncle, excluding the one killed by his father. If each of them has a daughter (25), and one of them kills his companion, the retaliation falls from him, because he inherited half the wealth of his brother and half the retaliation for himself, so the retaliation fell from him. He inherits the wealth of his father whom his brother killed, half the wealth of his brother, and half the wealth of his father whom he himself killed. The daughter whose father was killed inherits half the wealth of her father and half the wealth of her grandfather who was killed by her uncle, and she has a claim against her uncle for half the blood money of the one he killed.