Surah Al-Kahf 18:39

وَلَوْلَآ إِذْ دَخَلْتَ جَنَّتَكَ قُلْتَ مَا شَآءَ ٱللَّهُ لَا قُوَّةَ إِلَّا بِٱللَّهِ ۚ إِن تَرَنِ أَنَا۠ أَقَلَّ مِنكَ مَالًا وَوَلَدًا

And why did you, when you entered your garden, not say, 'What Allāh willed [has occurred]; there is no power except in Allāh'? Although you see me less than you in wealth and children,

Translation: Saheeh International

Tafsir

And if only when you entered your garden you had said upon admiring it ‘This is “What God has willed. There is no power except in God”. In a hadīth it is stated that ‘Whoever is given something good in the way of family or wealth and upon receiving it says “What God wills comes to pass; …

Excerpt from Tafsir al-Jalalayn, commentary on 18:39, via Quran.com. The reader has the full commentary and 9 more tafsirs.