:salam:

I've read this in .

Quote:
If one rinses the mouth during ablution [wudu] without exaggeration and some water reaches the body cavity, one’s fast is not nullified. But if one rinses the mouth for other than the ablution (such as to cool off or for cleanliness) and water reaches the body cavity, one’s fast is nullified even if one did not exaggerate. Similarly, if one rinses the mouth during ablution and exaggerates in doing so (by gargling, for example), one’s fast will be nullified if any water reaches the body cavity.

Does the same ruling apply for when somebody is doing istinja' with water and water reaches the body cavity (dubur) for example?

:jazak: