Najis

In Islamic law, najis (Arabic: نجس‎) means ritually unclean. According to Islam, there are two kinds of najis: the essential najis which cannot be cleaned and the unessential najis which become najis while in contact with another najis. Contact with najis things brings a Muslim into a state of ritual impurity (Arabic: نجاسة‎ najāsa, in opposition to ṭahārah, ritual purity). Ritual purification is then required before religious duties such as regular prayers are performed.

27 Questions

If my clothes became Najis because they came into contact and were contaminated with pork, how many times do I need to wash them so they become pure and I can wear them while performing prayers? Sayyed Mohammad Al-Musawi	There is a surface and a small part of it is Najis while the rest is Tahir, but I don't know which part is the Najis one. If a wet object touches such a surface, does it become Najis if one does not know whether it touched the Najis section? Sayyed Mohammad Al-Musawi
My friend has a big dog and she brings it when we hang out. Would my clothes or body become Najis if I pet or play with the dog although it isn't wet? Sayyed Mohammad Al-Musawi	I sometimes get doubts about my state of purity from when I go to the toilet. I try to analyze what happened and try and most of the time come to the conclusion that nothing Najis got on me, but I still get doubts. Am I considered ritually clean? Sayyed Mohammad Al-Musawi