There are 5 verses in this Surah and it is ‘makki’. Imam Ja’far as-Sadiq (a.s.) advised that whenever a person recites this Surah, he should curse Abu Lahab because of his he mistreated the Holy Prophet (Sal Allaho Alehi Wasallam) and showed disrespect to him. It is narrated that recitation of this Surah is good for relieving back pains and reciting it before sleeping keeps one safe in the night.