مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٦٣ - ABLUTIONS

water goes under it automaticallyand at other times it does not go there and the person concerned doubts after performing ablutions whether water has reached under it and if he is aware that at the time ofperforming ablutions be did not take notice of the fact that water reached under it the obligatory precaution is that he should perform his ablutions again.
٣٠٣. If after performing ablutions a person sees some such thing on the parts of his body on which ablutions is performed and which prevents water from reaching thebody and he does not know whether that thing was present at the time of per- forming ablutions or appeared later his ablutions would be in order. But if he knows that at thetune of performing ablutions he did not take notice of this impediment the obligatory precaution is that he should perform his ablutions again.
٣٠٤. If a person doubts after performing ablutions whether a thing which stops water from reaching the skin was or was not present on the limbs on which ablutionsis performed, and if the possibility is that while performing ablutions he did take notice of this matter, his ablutions is in order.
 
ORDERS REGARDING ABLUTIONS
٣٠٥. If a person doubts too much about the acts of ablutions and the conditions attached to it (for example about the water being pure or its not having beenusurped) and his doubt assumes the shape of an obsession, he should not pay any heed to his doubt.
٣٠٦. If a person doubts whether or not his ablutions has become void, he should treat it to be valid. However, if he does not perform Istabra (See, Article No. ١٣)after urinating and then performs ablutions and thereafter some fluid discharges about which he is not sure whether it is urine or something else, his ablutions will be void.
٣٠٧. If a person doubts whether or not he has performed ablutions he should perform ablutions.