فَانطَلَقَا حَتَّى إِذَا أَتَيَا أَهْلَ قَرْيَةٍ اسْتَطْعَمَا أَهْلَهَا فَأَبَوْا أَن يُضَيِّفُوهُمَا فَوَجَدَا فِيهَا جِدَارًا يُرِيدُ أَنْ يَنقَضَّ فَأَقَامَهُ قَالَ لَوْ شِئْتَ لَاتَّخَذْتَ عَلَيْهِ أَجْرًا
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سورة الكهف
(18/77) Then the twain journeyed until when they came unto the people of a city, they begged food from the people thereof, but they refused to entertain the twain. Then they found therein a wall, about to fall down, and he set it upright. Musa said: hadst thou willed, thou mightest have taken therefor a hire.
Surah Al-Kahf