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?
Such clothes need to be washed with water like washing any other Najis clothes, then it will become Taahir.
Plates and vessels contaminated by dog need to be washed first with soil, then with pure water, but this rule is not for clothes.
Plates or vessels contaminated with pig or dead rat need to washed with water seven times. That is not for clothes.
Wassalam.