بسم الله الرحمن الرحيم
In the Name of Allah The most Gracious The Most Merciful
There are six ways a person’s ablution can become nullified:
1. Anything that comes out of the private passages.
2. When ones loses consciousness, this can occur due to one falling asleep or fainting.
3. When one touches their private parts without them being covered whether in the front or back.
4. When one eats camel meat.
5. Apostasy, may Allah save us from this.