What Invalidates the Prayer

What invalidates the prayer in the Mālikī school:

1. Ḥadath (loss of ritual purity) — it invalidates the prayer when it occurs in it, immediately. 2. Excessive movement — i.e. movement not of the prayer's own kind, when its total reaches a full rakʿah. 3. Blowing (al-nafkh) deliberately during the prayer. 4. Qahqaha (loud laughter) — laughter with the voice, whether deliberate or forgetful. As for laughter without a voice, it does not invalidate the prayer even if the teeth show. If it occurs from a follower (maʾmūm), he does not cut the prayer off; he completes it and then repeats it. 5. Speaking deliberately, even a little — it invalidates the prayer. Speaking forgetfully does not invalidate it. If one speaks deliberately to set the prayer right, it does not invalidate it; an example: saying «subḥān Allāh» twice and it was not understood, so he was told to continue — if the speech was little, his prayer is valid and there is no sin upon him. 6. Deliberately eating or drinking — little or much — invalidates the prayer. As for the forgetful one, if he eats a little or drinks a little, his prayer is not invalidated. But if he eats and drinks together, his prayer is invalidated even if he was forgetful. 7. Adding or omitting — such as a prostration, when done deliberately (by adding a physical pillar). 8. Deliberately bringing the vomit back up — it invalidates the prayer. But if the vomit overcomes him, there is nothing upon him. 9. Doing a great deal of the prayer's own kind forgetfully — if one adds the like of it. Example: one prays Ṣubḥ as 4 rakʿahs; if he added one rakʿah, his prayer is not invalidated. As for Maghrib: if he prays 7 rakʿahs, his prayer is invalidated. 10. Intending to cut off the prayer — if an event occurs to him, such as a knock at the door, and he intends to break his prayer, his prayer is invalidated. So he does not cut it off and count it; rather he repeats it.