I want to know what invalidates fasting.

The nullifiers of fasting are:

1. Intentional eating and drinking: Fasting is not broken by eating or drinking forgetfully, by mistake, or under compulsion. 2. Intentional vomiting: However, one who is overcome by vomiting is not required to make up the fast. 3. Sexual intercourse: As Allah Almighty says: (And eat and drink until the white thread of dawn becomes distinct to you from the black thread [of night]. Then complete the fast until the night), and because the Prophet, peace and blessings be upon him, commanded expiation for sexual intercourse during Ramadan. 4. Masturbation: Which is intentionally causing semen to exit by any means. 5. Menstruation and postnatal bleeding for women: There is a consensus among scholars on this. 6. Intention to break the fast: If the intention is firm.