Is there a cure or solution for constant doubt (wiswas)? What should a person who suffers from it do when they are concerned about their own ritual purity?
A person who suffers from constant doubt (wiswas) must ignore it, and everything that they doubt to be pure should be considered pure, even if they are sure it has become impure. They are excused in this matter before God, even if their prayers are performed with an impurity (e.g., on their clothes) or their food has acquired some impurity.