2—The discharge of menstrual or postpartum blood.
3—The death of anyone other than a martyr.
4—A disbeliever’s acceptance of Islam.
Allah Most High says: “If you are in a state of major ritual impurity, then purify yourselves” [al-Māidah: 6].
He also says: “Do not approach them until they are pure. Then, when they have purified themselves, approach them from where Allah has commanded you,” to the end of the verse [al-Baqarah: 222]—meaning, once they have performed the ritual bath.
The Prophet (peace and blessings be upon him) commanded that one perform the ritual bath after washing a deceased person1.
He also commanded anyone who embraced Islam to perform the ritual bath2.
40—As for how the Prophet (peace and blessings be upon him) performed the ritual bath for major ritual impurity:
1—He would first wash his private parts.
2—He would then perform a complete ablution.
3—He would then pour water over his head three times, saturating it thoroughly3.