Book on Qasamah
716 — The scholars unanimously agree that whoever swears by Allah in the qasamah has indeed taken a valid oath.
This is the sum total of the consensus on qasamah. (1)
Book on the Apostate
717 — They unanimously agree that, if only one of a Christian’s two parents—both of them being adults, male or female—embraces Islam, the children do not automatically become Muslim by that parent’s conversion. (2)
718 — They unanimously agree that, if a madman makes statements of apostasy while insane, he remains Muslim in accordance with his prior status; and if someone deliberately kills him, retaliation (qiṣāṣ) is due if his children demand it.
719 — The scholars unanimously agree that, if a slave apostatizes, is asked to repent, and refuses, he is to be executed; I know of no dissent on this point.
720 — They unanimously agree that whoever reviles the Prophet—peace and blessings be upon him—is to be put to death. (3)(4)
721 — Every authority we record agrees that an apostate does not lose ownership of his property merely by apostasy.
722 — They unanimously agree that, when he returns to Islam, his property is restored to him so long as he has not joined enemy territory.
723 — All those from whom we preserve an opinion agree that, if the apostate repents and comes back to Islam, his property is returned to him.
724 — All those from whom we preserve an opinion agree that, when a non-Muslim says, “There is no god but Allah and Muhammad is His slave and Messenger,” and adds nothing further, he is a Muslim; and we know of no one who has obliged the apostate