Translation for 50:12

كَذَّبَتۡ قَبۡلَهُمۡ قَوۡمُ نُوحٖ وَأَصۡحَٰبُ ٱلرَّسِّ وَثَمُودُ ١٢
Before them, the people of Noah denied ˹the truth,˺ as did the people of the Water-pit,1 Thamûd,

Foot notes

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 Ar-Rass means “well” or “water-pit”. This refers to a pagan people, along with Midian, to whom Allah sent Prophet Shu’aib (ﷺ).