40 verses • revealed at Meccan
»The surah that opens with the emphatic oath of the Divine One swearing by the looming day of Resurrection. It takes its name from verse 1, which mentions the Day of Resurrection. The surah dealing with the Day of Resurrection and man’s denial of that Day. God’s power is convincingly described in several vignettes (verse 3 ff., verse 26 ff. and verse 34 ff.). The third paragraph instructs the Prophet on appropriate reception of the revelation (verse 16 ff.), and thereby serves to emphasize that the Quran is indeed God’s word.«
The surah is also known as Day of Resurrection, The Rising
بِسمِ اللَّهِ الرَّحمٰنِ الرَّحيمِ
جلال الدين السيوطي: «بسم الله الرحمن الرحيم»
«لا» زائدة في الموضعين «أقسم بيوم القيامة».