Question :

What is the ruling on reciting the Chapter after Al-Faatihah , and what should a worshiper who forgets it do?

The Answer :

Any other part of Qur'an that a worshiper reads after Al-Faatihah during the first and the second Rak`ahs is a Sunnah, and forgetting to do so doesn`t nullify prayer, and doesn`t require performing Sujood As-Sahw ( prostration of forgetfulness).