Question 227) - What should he do if he sat in Tashshahud of the fourth Rak'ah then rose thinking that it was the second Rak'ah and remembered the correct number?

A: He should return and sit if he did not make Sajdah for the fifth Rak'ah. He should make Sujudus Sahw and his Salah is valid.

~ al-Quduri ~