Translation for 46:21

۞ 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 ٢١
And remember the brother of ’Ȃd, when he warned his people, who inhabited the sand-hills1—there were certainly warners before and after him—˹saying,˺ “Worship none but Allah. I truly fear for you the torment of a tremendous day.”

Foot notes

77359

 The people of ’Ȃd were the residents of the hills in the southern part of the Arabian Peninsula.