كِتَـبٌ أُنزِلَ إِلَيْكَ

((This is the) Book (the Qur'an) sent down unto you (O Muhammad)), from your Lord,

فَلاَ يَكُن فِى صَدْرِكَ حَرَجٌ مِّنْهُ

Commentary

An overview of the Surah shows that most of the subjects it deals with are related to Ma` ad (Return to the Hereafter) and Risalah (Prophethood). The former appear from the beginning of the Surah upto approximately the end of the sixth section. Then, from the eighth to the twenty first sections, there is a detailed description of past prophets, events about their communities, their reward and punishment and the punishment which overtook them.