Key Verses

1. 46:21Al-AhqafWarning
   ۞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 make mention (O Muhammad) of the brother of A'ad when he warned his folk among the wind-curved sandhills - and verily warners came and went before and after him - saying: Serve none but Allah. Lo! I fear for you the doom of a tremendous Day.
   In context

   O Messenger, remember Hud, the brother of Ad in lineage, when he warned his people of Allah’s punishment befalling them, when they were in their homes in Ahqaf in the south of the Arabian Peninsula, and messengers to warn their people had already passed before Hud and after him, saying to their people: “Do not worship anyone except Allah alone; do not worship anything besides Him.