Do the hair and clothes of a woman, who has touched her hair and clothes with her impure hand while wet, become impure? Do the places touched by her hair become impure? And what should be done about the places that have become impure and regarding her prayer?

The summary of the answer states that if a ritually impure (najis) fingernail touches hair or clothing, and the impurity itself ( عين النجاسة) is still present on the nail at the time of contact, and one of the two (the nail or the hair/clothing) is wet, then both become ritually impure. However, if the impurity itself has been removed, the touched item does not become impure, even if it is wet, because what remains then is merely the effect of the impurity, not the impurity itself. As for the prayer of someone who had an impurity on their fingernail, either out of forgetfulness or ignorance, and only became aware of it after the prayer, scholars have differed regarding the validity of their prayer.