Al-Ahqaf · Ayah 21
وَٱذْكُرْ أَخَا عَادٍ إِذْ أَنذَرَ قَوْمَهُۥ بِٱلْأَحْقَافِ وَقَدْ خَلَتِ ٱلنُّذُرُ مِنۢ بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِۦٓ أَلَّا تَعْبُدُوٓا۟ إِلَّا ٱللَّهَ إِنِّىٓ أَخَافُ عَلَيْكُمْ عَذَابَ يَوْمٍ عَظِيمٍ
And mention, [O Muḥammad], the brother of ʿAad,[1484] when he warned his people in [the region of] al-Aḥqāf - and warners had already passed on before him and after him - [saying], "Do not worship except Allāh. Indeed, I fear for you the punishment of a terrible day."[1485]
Translator's notes
[1484] i.e., the prophet Hūd. [1485] Upon the earth. It could also refer to "a tremendous Day," i.e., that of resurrection.
Quran 46:21 (Al-Ahqaf) · Saheeh International, Noor International Center (QuranEnc v1.1.2)