Sura al-Anʿām 6:156

أَن تَقُولُوٓا۟ إِنَّمَآ أُنزِلَ ٱلْكِتَٰبُ عَلَىٰ طَآئِفَتَيْنِ مِن قَبْلِنَا وَإِن كُنَّا عَن دِرَاسَتِهِمْ لَغَٰفِلِينَ

an taqūlū innamā unzila l-kitābu ʿalā ṭāʾifatayni min qablinā wa-in kunnā ʿan dirāsatihim la-ghāfilīna

Lest ye should say: "The Book was sent down to two Peoples before us, and for our part, we remained unacquainted with all that they learned by assiduous study:"