Surah Al-Kahf, verse 77

فَٱنطَلَقَا حَتَّىٰٓ إِذَآ أَتَيَآ أَهْلَ قَرْيَةٍ ٱسْتَطْعَمَآ أَهْلَهَا فَأَبَوْا۟ أَن يُضَيِّفُوهُمَا فَوَجَدَا فِيهَا جِدَارًا يُرِيدُ أَن يَنقَضَّ فَأَقَامَهُۥ ۖ قَالَ لَوْ شِئْتَ لَتَّخَذْتَ عَلَيْهِ أَجْرًا ﴿٧٧﴾

18:77 Then they went on until they came to the people of a town. They asked its people for food, but they refused to offer them hospitality. They found there a wall that was about to collapse, but he repaired it. Moses said, “If you wished, you could have taken some payment for it.”