Imam Shams-ud-din Dimishqi writes: It is proven that Abu Lahab's punishment of fire is reduced on every Monday because he rejoiced on brith of Prophet (Peace Be Upon Him) and freed the slave-woman Thawba (ra) When Abu Lahab, whose eternal abode is hell fire and regarding whom whole surah of Tabad Yada (i.e. Surah Lahab) was revealed, he gets Takhfif in his Adhaab every Monday then Imagine the situation of a (momin) who has spent his life in rejoicing over birth of Prophet (saw) and died as a Mawhid [Husn al-Maqsad fi Amal al-Mawlid, Page No. 66]