Verse 32

وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لَوْلَا نُزِّلَ عَلَيْهِ ٱلْقُرْءَانُ جُمْلَةً وَٰحِدَةً كَذَٰلِكَ لِنُثَبِّتَ بِهِۦ فُؤَادَكَ وَرَتَّلْنَـٰهُ تَرْتِيلًا

And the unfaithful said; why did not this Quran come to him all at once. We thus had you learn it by heart, and recited it in a specific order.