﴿ فَلَمَّا جَآءَهُم مُّوسَىٰ بِـَٔايَٰتِنَا بَيِّنَٰتٍۢ قَالُوا۟ مَا هَٰذَآ إِلَّا سِحْرٌۭ مُّفْتَرًۭى وَمَا سَمِعْنَا بِهَٰذَا فِىٓ ءَابَآئِنَا ٱلْأَوَّلِينَ ﴾

“But as soon as Moses came unto them with Our clear messages [Pharaoh and his great ones] said: “All this is nothing but spellbinding eloquence devised [by man]: and never did we hear [the like of] this, [nor has it ever been heard of] in the time of our forebears of old!””

Please check ayah 28:37 for complete tafsir.