۞ وَاذْكُرْ اَخَا عَادٍۗ اِذْ اَنْذَرَ قَوْمَهٗ بِالْاَحْقَافِ وَقَدْ خَلَتِ النُّذُرُ مِنْۢ بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهٖٓ اَلَّا تَعْبُدُوْٓا اِلَّا اللّٰهَ ۗاِنِّيْٓ اَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ عَظِيْمٍ ( الأحقاف: ٢١ )
Wazkur akhaa 'Aad, iz anzara qawmahoo bil Ahqaafi wa qad khalatin nuzuru mim baini yadaihi wa min khalfiheee allaa ta'budooo illal laaha inneee akhaafu 'alaikum 'azaaba Yawmin 'azeem (al-ʾAḥq̈āf 46:21)
Sahih International:
And mention, [O Muhammad], the brother of Aad, when he warned his people in [the region of] al-Ahqaf – and warners had already passed on before him and after him – [saying], "Do not worship except Allah. Indeed, I fear for you the punishment of a terrible day." (Al-Ahqaf [46] : 21)
1 Mufti Taqi Usmani
And recall the brother of (the nation of) ‘Ād, when he warned his people at the long, curved sand dunes- while many warners have passed before him and after him (with the same message)-saying, “Do not worship anyone except Allah. Surely I fear for you the punishment of a terrible day.”