Al-Muddaththir • BN-TAFSEER-IBN-E-KASEER
﴿ فَقَالَ إِنْ هَٰذَآ إِلَّا سِحْرٌۭ يُؤْثَرُ ﴾
“and says, "All this is mere spellbinding eloquence handed down [from olden times]!”
Please check ayah 74:30 for complete tafsir.