Az-Zukhruf • BN-TAFSEER-IBN-E-KASEER
﴿ أَمْ ءَاتَيْنَٰهُمْ كِتَٰبًۭا مِّن قَبْلِهِۦ فَهُم بِهِۦ مُسْتَمْسِكُونَ ﴾
“Or have We, perchance, vouchsafed them, before this one, a revelation [to the contrary,] to which they are still holding fast?”
Please check ayah 43:25 for complete tafsir.