Surah 91. Ash-Shams, Ayah 1

Six types are taken in three pairs, from Allah's mighty works in nature, as tokens or evidence of Allah's providence and the contrasts in His sublime creation, which yet conduce to cosmic harmony (verses 1-6). Then (verses 7-8) the soul of man, with internal order and proportion in its capacities and faculties, as made by Allah, is appealed to as having been endowed with the power of discriminating between right and wrong. Then the conclusion is stated in verses 9-10, that man's success or failure, prosperity or bankruptcy, would depend upon his keeping that soul pure or his corrupting it.