Question:In prayer, a person doubts in the first rak’ah to be the first or second rak’ah, but he continues his prayer and while he is performing the second rak’ah, he is sure of this doubt that this is the first rak’ah. Does this kind of continuation in a state of doubt invalidates the prayer?

Answer:In the name of Allah, if his doubt is inclined more to one side rather than the other, he has to take that stronger side. However, if his doubt is in between the two thoughts (the first rakah or the second), he has to nullify this prayer and perform it again and if he does not do so, he has to repeat it in its due time and perform it as a missed prayer in another time. Allah knows best.