Key Verses

1. 25:38Al-Furqan
   وَعَادٗا وَثَمُودَاْ وَأَصۡحَٰبَ ٱلرَّسِّ وَقُرُونَۢا بَيۡنَ ذَٰلِكَ كَثِيرٗا
   And (the tribes of) A'ad and Thamud, and the dwellers in Ar-Rass, and many generations in between.
   In context

   I also destroyed the Ad, the people of Hud, and the Thamud, the people of Salih. I destroyed the people of the Well and I destroyed many communities between these three.

2. 50:12QafWarning
   كَذَّبَتۡ قَبۡلَهُمۡ قَوۡمُ نُوحٖ وَأَصۡحَٰبُ ٱلرَّسِّ وَثَمُودُ
   The folk of Noah denied (the truth) before them, and (so did) the dwellers at Ar-Rass and (the tribe of) Thamud,
   In context

   O Messenger! Before these people who have rejected you, many nations rejected their Prophets. The people of Noah, the people of The Well and the Thamud all denied their Prophets.