فصّلت — Fussilat Ayat 45
وَلَقَدْ اٰتَيْنَا مُوْسَى الْكِتٰبَ فَاخْتُلِفَ فِيْهِ ۗوَلَوْلَا كَلِمَةٌ سَبَقَتْ مِنْ رَّبِّكَ لَقُضِيَ بَيْنَهُمْ ۗوَاِنَّهُمْ لَفِيْ شَكٍّ مِّنْهُ مُرِيْبٍ
Wa laqad ātainā mūsal-kitāba fakhtulifa fīh(i), wa lau lā kalimatun sabaqat mir rabbika laquḍiya bainahum, wa innahum lafī syakkim minhu murīb(in).
"And We had already given Moses the Scripture, but it came under disagreement. And if not for a word that preceded from your Lord, it would have been concluded between them. And indeed they are, concerning the Qur'an, in disquieting doubt."