There are 64 ayaat in this surah and it was revealed in Madinah. In the commentary of Burhan it is narrated from Imam Ja’far as-Sadiq (a.s.) that whoever constantly recites surah an-Nur will never, in his lifetime, see any evil from his near ones and when he dies, seventy thousand angels will accompany his body up to the grave and will pray for his forgiveness.
The Holy Prophet (s.a.w.) said that it is especially good for women to recite this surah. He (s.a.w.) also said that the reward for reciting this surah is equal to ten times the number ofmu’mineen and mu’minaat on the Earth. The sixth Imam (a.s.) said that keeping this surah in one’s bed prevents wet dreams
This surah was revealed in Madinah and has a total of 177 verses. In 'tafseer al-burhan' it is written that Imam Ali (a.s.) has said that whoever recites this surah on every Friday, he will remain safe from the squeezing in the grave (‘fishare qabr’).