forgetfulness in the Prayer

Then many people are ignorant about many of the rulings concerning the Sujoodus-Sahw (prostration for forgetfulness) in the prayer. Some of them leave the Sujoodus-Sahw when it is obligatory upon them; others perform the prostration in other than its correct place; some perform it before the salaam (salutation at the end of the prayer) even in cases when’ it has to be performed after the salaam; others prostrate after the salaam even when it should be performed before it. Therefore, it is very important to become aware of its rulings, especially for the Imams whom the people follow in their prayers, and who have therefore taken on the responsibility of following that, which is correct and prescribed in their prayers, and of leading the Muslims upon that. So I wished to put this Application before my brothers and sisters in Islam some of the rulings in this regard, hoping that Allah, the Most High, will cause it to be of benefit to His believing servants.