The commentators and traditionists are unanimous about the occasion of the revelation of this Surah. According to them, once some big chiefs of Makkah were sitting in the Holy Prophet’s assembly and he was earnestly engaged in trying to persuade them to accept Islam. At that very point, a blind man, named Ibn Umm Maktum, approached him to seek explanation of some point concerning Islam. The Holy Prophet (upon whom be peace) disliked his interruption and ignored him. Thereupon Allah sent down this Surah. From this historical incident the period of the revelation of this Surah can be precisely determined.