Surah Al-Kahf Verse 77 - English Translation by Aisha Bewley
Surah Al-Kahfفَٱنطَلَقَا حَتَّىٰٓ إِذَآ أَتَيَآ أَهۡلَ قَرۡيَةٍ ٱسۡتَطۡعَمَآ أَهۡلَهَا فَأَبَوۡاْ أَن يُضَيِّفُوهُمَا فَوَجَدَا فِيهَا جِدَارٗا يُرِيدُ أَن يَنقَضَّ فَأَقَامَهُۥۖ قَالَ لَوۡ شِئۡتَ لَتَّخَذۡتَ عَلَيۡهِ أَجۡرٗا
So they went on until they reached the inhabitants of a town. They asked them for food but they refused them hospitality. They found there a wall about to fall down and he built it up. Musa said, ´If you had wanted, you could have taken a wage for doing that.´