Question :
What should one who forgot to offer the second Sajda during congregational prayer, and remembered it before the end of the prayer do?
The Answer :
All perfect praise be to Allah, The Lord of The Worlds. Whoever forgets a pillar of prayer while in congregation must follow the lead of the Imam, and after the latter offers Tasleem, he should offer one Rakah, then perform Sujood As-Sahw (prostration of forgetfulness). And Allah Knows Best.