Sujudus-sahwi is perfomed to
- increase the number of rak'ah in an Obligatory
-
correct a error in the course of salat
- decrease the number of rak'ah of a supererogatory salat
- add quality to an on-going salat
The correct answer is: B
Explanation
Hadith 9 of an_Nawawi is an admonition against excessive questioning or questions which are forbidden.