Opens with oaths sworn by dawn and ten nights (traditionally understood as the first ten days of Dhul-Hijjah), then recalls the destroyed peoples of 'Ad, Thamud, and Pharaoh as a rebuke to a Mecca that equated wealth with divine favor and poverty with divine neglect — insisting neither is a reliable measure of standing with God. It closes with a memorable, almost tender address to "the soul at peace," inviting it to return to its Lord well-pleased and pleasing — one of the gentler closing images in the more urgent, warning-heavy early Meccan surahs. It briefly criticizes those who fail to honor orphans and fail to encourage feeding the poor, instead devouring inheritance greedily and loving wealth intensely — tying a cosmic meditation on past destroyed nations directly back to very concrete, immediate social failings within the surah's own audience.
Pushes back on the idea that being rich means being right, or being poor means being neglected — a message about misreading fortune as moral judgment. The phrase "soul at peace" (nafs al-mutma'innah) became an important concept in later Islamic spiritual and psychological writing, describing the ideal state of inner contentment achieved through sincere devotion. That direct pivot from ancient history to immediate social criticism is often noted as characteristic of the Quran's structure — grand historical example serving ultimately to illuminate a very present, local problem the audience needed to address.