Sura Fuṣṣilat 41:50

وَلَئِنْ أَذَقْنَٰهُ رَحْمَةً مِّنَّا مِنۢ بَعْدِ ضَرَّآءَ مَسَّتْهُ لَيَقُولَنَّ هَٰذَا لِى وَمَآ أَظُنُّ ٱلسَّاعَةَ قَآئِمَةً وَلَئِن رُّجِعْتُ إِلَىٰ رَبِّىٓ إِنَّ لِى عِندَهُۥ لَلْحُسْنَىٰ فَلَنُنَبِّئَنَّ ٱلَّذِينَ كَفَرُوا۟ بِمَا عَمِلُوا۟ وَلَنُذِيقَنَّهُم مِّنْ عَذَابٍ غَلِيظٍ

wa-lain adhaqnāhu raḥmatan minnā min baʿdi ḍarrāʾa massathu la-yaqūlanna hādhā lī wa-mā aẓunnu l-sāʿata qāʾimatan wa-laʾin rrujiʿtu ilā rabbī inna lī ʿindahu la-l-ḥusnā fa-la-nunabbiʾanna lladhīna kafarū bi-mā ʿamilū wa-la-nudhīqannahum min ʿadhābin ghalīẓin

When we give him a taste of some Mercy from Ourselves, after some adversity has touched him, he is sure to say, "This is due to my (merit): I think not that the Hour (of Judgment) will (ever) be established; but if I am brought back to my Lord, I have (much) good (stored) in His sight!" But We will show the Unbelievers the truth of all that they did, and We shall give them the taste of a severe Penalty.