Are non-Muslims najis (ritually impure)?
Ahl-e Kitab (People of the Book) are Tahir (ritually pure) provided that they are not Mushrik (polytheists). All non believers other than the people of the Book including the polytheists are najis (unclean). Therefore, if they touch something while their hands are wet, then that thing becomes najis. Q3: I am from India and I travel by train. In summer season while on board I see a lot of Sikhs and Hindus perspiring some of them with me in my compartment. Do I have to change my cloth, if I know that my clothes have come into contact with their perspiration? A3: Yes, you must change your clothe in the said case.