Obsessions in Ritual Purity

Question : The questioner says: At many times, I feel that a drop of urine is coming out, and this usually happens during prayer. Is this an obsession (waswas) or something else?

Answer : These issues occur frequently, where a person may feel that he has been affected by a state of ritual impurity, whether it be wind, urine, or feces. However, the Healer of Hearts, Muhammad (peace and blessings be upon him), clarified this when a man complained to him that he felt he was passing something during prayer. The Prophet (peace and blessings be upon him) said: "Do not leave the prayer until you hear a sound or find a smell." The meaning is that one should not pay attention to what he feels in his heart until it becomes clear to him through the external senses, namely hearing a sound or finding a smell. Likewise, if he is certain that something has come out of him without hearing a sound or finding a smell, the ruling is the same. The important point is that one should not pay attention to these psychological estimates, but rather to tangible matters. If he is certain that something has come out of him, his wudu' (ablution) is invalidated, and he must leave his prayer. If he is an imam and this happens to him, and he is certain that he has become ritually impure, or if he was an imam who entered the congregation thinking he was in a state of purity, but then realized during the prayer that he was ritually impure, the way to proceed in both the first and second case is for this imam to leave the prayer and appoint someone to complete the prayer with the ma'mum (congregation). He should complete the prayer with them. If he does not do so, meaning he leaves without appointing someone to complete the prayer on his behalf, then the ma'mum should each complete the prayer for themselves, or they should appoint one person to complete the prayer with them. The prayer of the ma'mum is not invalidated in this situation by the invalidation of the imam's prayer, whether the imam entered the prayer in a state of purity and then became impure, or entered the prayer thinking he was pure and then remembered that he was impure. The ruling in that is one, and there is no difference. So the prayer of the ma'mum is valid in all cases, because the ma'mum followed an imam whom they believed to be in a valid state of prayer, and they did not know about the state of impurity that occurred with him, whether prior or subsequent. They have feared Allah (Glorified and Exalted is He) as much as they were able, and whoever fears Allah as much as he is able is not ordered to repeat the act of worship.
Yes, if one knows that the imam is ritually impure, it is not permissible to follow him because he is in a state of invalidity. Let us suppose, for example, that you and the imam sat at a table, you both sat at a table, and you both ate camel meat. Camel meat invalidates wudu'. Then you both stood up for prayer, and the imam led the congregation, and you were among them. Your prayer is valid because you followed an imam whom you believed to be in a valid state of prayer, whereas he prayed while in a state that invalidates wudu' by eating camel meat. As for the imam himself, he is excused because he may have been forgetful. And the ma'mum behind him who did not know about it are also excused, and there is no deficiency in their prayer, nor are they required to repeat it.