Question: If a Masbooq, (one who missed Rakaats behind the Imaam) forgetfully makes Salaam - what should he do?

Answer: If a Masbooq, forgetfully, makes Salaam after the Imaam, he should stand up, complete his Salaah and make Sajdah Sahu.

لو سلم مع الامام ساهيا او قبله لا يلزمه سجود السهو وان سلم بعده لزمه ( هندية ج1 ص91)

AND ALLAH KNOWS BEST

Yusuf Moosagie