Issue No.1030- It is recommended that one’s response to Salām be better (except in prayer where one should, as was explained before, answer in the same words) For example, when one says Salamun Alaykum [outside of the prayer], the other should say “Salamun Alaykum Wa rahmatullah” in reply.
Issue No. 1035 - If a person remains silent during prayer for a long period that it may not be said that he is offering prayer, his prayer is void. However, if one remains silent for some time and then doubts whether this amount of silence has invalidated his prayer or not, his prayer is correct. Similarly, if he performs an act during prayer in which he doubts whether it has disturbed the form of his prayer or not, his prayer will be valid.
Issue No. 1039 - If a person doubts after the prayer, whether he performed any of the invalidators or not, he should ignore his doubt and his prayer is correct.
Issue No. 1053 - If a person doubts while rising to stand, whether or not he has performed tashahhud, or while going into sajdah, doubts whether or not he has performed rukū‘, the obligatory precaution is to go back and perform it.
Issue No. 1054 - If a person, who is offering prayer in a sitting or lying position, doubts at the time of reciting sūrah al-fātiḥa or tasbīḥāt arbaʿah, whether or not he has performed sajdah or tashahhud, he should ignore his doubt. However, if the doubt occurs before starting the recitation of sūrah al-fātiḥa or tasbīḥāt arbaʿah, he should perform them.
Issue No. 1055 - If before the time of performance passes, a person doubts and goes back to perform it; then later he realises that he had already performed it; meaning: the second performance had been performed additionally, the prayer will become void, provided that the additional act was a foundational one, otherwise, the prayer is correct.
Issue No. 1056 - If the doubt occurs when the time of performance has passed and one has ignored the doubt and consequently proceeded with the prayer as prescribed; and then realises that act had not been performed, if he has not yet entered the next foundational element (rukn), one should go back and perform it. If however, one has begun the next foundational element, his prayer is correct, if the act that has not been performed was not a foundational element of prayer.
Issue No. 1057 - If a person doubts whether he has recited the salām of prayer or not, or doubts whether he has recited it correctly, while he has already started another prayer, or has disturbed the form of prayer, he should ignore his doubt, otherwise he should recite salām.
Issue No. 1060 - If after the time of ẓuhr and ‘aṣr prayers has passed, a person knows that he has offered only four rak‘ats, but does not know whether it has been with the intention of ẓuhr or ‘aṣr, he should, offer four rak‘ats of qaḍā prayer with the intention of whatever is obligatory due upon him. However, if after the time of maghrib and ‘ishā’ prayers has elapsed and a person knows that he has offered one prayer, but does not know whether it was of three or four rak‘ats, he should offer the qaḍā of both maghrib and ‘ishā’ prayers.
Issue No.1061- Kathīr al-shak, which is a person who doubts too much, should ignore his doubts, whether the doubt relates to the number of the rak‘ats, to parts of the prayer, or the conditions of prayer.
Issue No.1062- Kathīr al-shak (obsessive) is a person about whom it could be said that he doubts quite frequently. If a person doubts three times in one prayer or doubts in three prayers in a row, he is regarded as Kathīr al-shak.
Issue No. 1063 - If a person temporarily becomes Kathīr al-shak due to an exceptional case such as sickness, anger, or calamity, he should pay heed to his doubt and act according to the rules prescribed for it.
