Topic: Invalidators of Prayer

[As-Sunni]

Prayer is invalidated by:

1. Uttering even two letters or one meaningful letter unless one forgets and it is little;
2. Performing many moves, which according to some scholars are as many as what would last for the duration of one rak^ah. According to other scholars three consecutive moves invalidate the prayer. The first saying, however, has a stronger evidence;
3. Performing an excessive move;
4. Adding an extra integral which involves action;
5. Performing one move with the purpose of playing;
6. Eating and drinking except if one forgets and it is little;
7. Intending to interrupt prayer;
8. Making an intention to interrupt prayer contingent on the occurrence of an incident;
9. Hesitating about interrupting prayer;
10. The completion of an integral while the doubt about one's intention of the opening saying of Allahu akbar (taharrum) is still persisting or doubting for a long time about this intention.