2a] Reasons for doing the prostration of forgetfulness

2a]
Omitting an obligatory part of the prayer – such as if he omits an obligatory part and moves on to the next partof the prayer. For example, he forgets to saySubhaan Rabbiy al-A’la (Glory be to my Lord Most High) and he does not remember until he has got up from prostrating. In this case he has omitted an obligatory part of the prayer by mistake, so he should carry on with his prayer then do the prostration offorgetfulness before saying the salaam, because when the Prophet (peace and blessings of Allaah be upon him) omitted the first tashahhud he carried on with his prayer and didnot go back and repeat anything, then he did the prostration of forgetfulness before saying the salaam.
In the case of being uncertain, such as if a person is not sure if he has done something extraor omitted something, e.g., he is not sure whether he has prayed three rak’ahs or four, one of the following two scenarios must apply:
Either he thinks that one or the other is more likelyto be case, whether it is doing more or omitting something, in which case he should proceed on the basis of what he thinks is more likely to be the case,complete his prayer accordingly, then do the prostration of forgetfulness after saying the salaam;
Or neither appears more likely to be the case, so heshould proceed on the basis of what is certain, namely the lesser amount, and complete hisprayer accordingly, then do the prostration of forgetfulness before saying the salaam.
For example: a man prays Zuhr then he is not sure whether he is praying the third or fourth rak’ah, but he thinks it more likely that it is the third. So he should pray another rak’ah, then say the salaam, then do the prostration of forgetfulness.
An example of when neither seems to him more likely to be the case is when a man is praying Zuhr and is not sure whether he is in the third rak’ah or the fourth, and neither seems to him more likely to be the case.In that case he should proceed on the basis of what is certain, which is the lesser amount. So he should regard it as the third rak’ah, then do another rak’ah and do theprostration of forgetfulness before saying the salaam. Thus it becomes clear that this should be done before thesalaam if you have omitted one of the obligatory parts of the prayer or if you are not sure how many rak’ahs you have done, and neither of the two choicesseems more likely to be the case. And it should be done after the salaam if you have added something extra to the prayer or you are not certain but one of the twochoices seems more likely to be the case.

And Allaah is the Source ofstrength./ - - - :-> Transtors: 1.http://free-translation.imtranslator.net/lowres.asp 2.http://translate.google.com/m?twu=1&hl=en&vi=m&sl=auto&tl=en