Surah Al-Ahqaf Verse 21 - English Translation by Literal
Surah Al-Ahqaf۞وَٱذۡكُرۡ أَخَا عَادٍ إِذۡ أَنذَرَ قَوۡمَهُۥ بِٱلۡأَحۡقَافِ وَقَدۡ خَلَتِ ٱلنُّذُرُ مِنۢ بَيۡنِ يَدَيۡهِ وَمِنۡ خَلۡفِهِۦٓ أَلَّا تَعۡبُدُوٓاْ إِلَّا ٱللَّهَ إِنِّيٓ أَخَافُ عَلَيۡكُمۡ عَذَابَ يَوۡمٍ عَظِيمٖ
And remember Aad`s brother when He warned/gave notice (to) his nation by the long winding sand (patterns/dunes), and the warnings/notices had past/expired from between his hands and from behind him (the warnings were given before and during his time): "That you not worship except God, that I, I fear on (for) you a great day`s/time`s torture