Qaaf • BN-TAFSEER-IBN-E-KASEER
﴿ كَذَّبَتْ قَبْلَهُمْ قَوْمُ نُوحٍۢ وَأَصْحَٰبُ ٱلرَّسِّ وَثَمُودُ ﴾
“[Long] before those [who now deny resurrection] did Noah’s people give the lie to this truth, and [so did] the folk of Ar-Rass, and [the tribes of] Thamud”
Please check ayah 50:15 for complete tafsir.