ভূমিকা
Shiavault - a Vault of Shia Islamic Books Islamic Laws of Ayatullah Khui Orders Regarding Things Which Invalidate Prayers 1135. Twelve things make prayers void and they are called mubtilat. First: If while offering prayers one of the necessary conditions of prayers ceases to exist. For example, if the person concerned comes to know that the dress with which he has covered himself is an usurped one.
Second: While offering prayers a person is faced, intentionally or by mistake or owing to helplessness, with a situation which makes his ablutions or bath (Ghusl) void - for example, if urine is discharged from his body. However, as regards a person who cannot control his faeces or urine, his prayers will not become void if he acts according to the instructions detailed earlier in connection with ablutions.
Similarly if blood is discharged from the body of a mustahiza (a woman in her undue menses) while she is offering prayers, her prayers will not become void if she acts upon the orders relating to istihaza. 1136. If a person sleeps involuntarily and does not know whether he slept while he was offering prayers or afterwards, he should offer his prayers again. 1137.
If a person knows that he slept voluntarily and doubts whether he slept after the prayers, or forgot during the prayers that he was engaged in prayers and went to sleep, his prayers is in order. 1138. If a person wakes up in the state of prostration and doubts whether he is in the prostration of the prayers or in the prostration for thanksgiving, and if he knows that he slept involuntarily he should offer that prayers again.
And if he slept intentionally and it is probable that he slept during the prostration of prayers on account of carelessness his prayers is in order. Third: If a person holds his hands with the intention that it is a part of the prayers, his prayers will be nullified by doing so. In case, however, he does not do so with this intention, but only as a mark of respect, he should, on the basis of obligatory precaution, re-offer the prayers. 1139.
There is no harm if a person places his hands on each other on account of forgetfulness, helplessness, taqayyah (dissimulation), or for some other purpose e.g. to scratch. Fourth: The fourth thing which nullifies prayers is that one says Amin without the intention of supplication, or considers it to be a part of prayers. In case, however.