Question
What is the ruling on the obligatory prayer if we sat in the third rak'ah and recited the Tashahhud, then remembered and stood up for the fourth rak'ah?
Answer
I say, and with God's success: If you sit for the Tashahhud after the third Rak'ah and then stand for the fourth, you are required to perform the prostration of forgetfulness; because you have performed the Tashahhud in the wrong place, and God knows best.