Muwatta Imam Malik (Riwayat Yahya)

Imam Malik, may Allah have mercy on him, said that when a person is killed intentionally, and the murder is proven by witnesses, and the deceased has sons and daughters, if the sons forgive but the daughters do not forgive, then the daughters not forgiving will not cause any problem; rather, the blood will be forgiven, because as long as there are sons, the daughters do not have authority.