Nine acts invalidate the fast according to Ayatollah Khamenei
- Eating and drinking
- Sexual intercourse
- To masturbate;
- To attribute to Allah, the Holy Prophet SAW, or infallible Imams a thing which is not true;
- To let thick dust to reach the throat;
- To immerse the whole head under the water;
- To continue to be in state of Janābah/menses/nifās by fajr adhān;
- To vomit on purpose.
[Items 4, 5, and 6 invalidate the fasts by obligatory caution].