Surah Fussilat — Ayah 42 (41:42)
لَّا يَأۡتِيهِ ٱلۡبَٰطِلُ مِنۢ بَيۡنِ يَدَيۡهِ وَلَا مِنۡ خَلۡفِهِۦۖ تَنزِيلٞ مِّنۡ حَكِيمٍ حَمِيدٖ ٤٢
English translation (Saheeh International)
Falsehood cannot approach it from before it or from behind it; [it is] a revelation from a [Lord who is] Wise and Praiseworthy.
Brief commentary
And indeed, it is a noble and protected book. Falsehood in the form of subtraction, addition, change or distortion cannot come to it directly or indirectly. It is a revelation from One who is Wise in His creation, decree and legislation, and praiseworthy in all conditions.