The Holy Quran 18:39 — Surah Al-Kahf
Arabic text
وَلَوْلَآ إِذْ دَخَلْتَ جَنَّتَكَ قُلْتَ مَا شَآءَ ٱللَّهُ لَا قُوَّةَ إِلَّا بِٱللَّهِ ۚ إِن تَرَنِ أَنَا۠ أَقَلَّ مِنكَ مَالًا وَوَلَدًا
Translation
"When you enter your garden, why do you rather not say, 'Maashaa Allaah La Quwwata illaa billaah' ("Only what Allaah wills shall happen and all might is with Allaah" . Allaah gives and takes as and when He pleases. By saying this, you will be acknowledging that all you have is from Allaah and that you should be praising Him instead of boasting) ? If you think that (you are closer to Allaah because of your wealth and that I am not because) I have less wealth and children than you..."
Tafsir (excerpt) — Tafsir Usmani
Instruction to say the words “What Allah wills; there is no power except with Allah”: that is, wealth is a blessing from Allah, but boasting and uttering disbelief bring calamity. On entering the garden he ought to have said, instead of مَآ اَظُنُّ اَنْ تَبِيْدَ هٰذِهٖٓ اَبَدًا (“I do not think that this will ever perish”)
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