Translation of the verse 77 from Surah Al-Kahf : Number of verses 110 - - page 302 - Part 16.
Then they both proceeded, till, when they came to the people of a town, they asked them for food, but they refused to entertain them. Then they found therein a wall about to collapse and he (Khidr) set it up straight. [Musa (Moses)] said: If you had wished, surely, you could have taken wages for it!"
So they set out, until when they came to the people of a town, they asked its people for food, but they refused to offer them hospitality. And they found therein a wall about to collapse, so al-Khidh r restored it. [Moses] said, "If you wished, you could have taken for it a payment."
(18:77) Then they travelled on until they reached a certain habitation and requested its inhabitants to give them some food but they declined to entertain them. There they saw a wall which was about to fall down. That person set it up again. Moses said, "Had you wanted, you could have demanded payment for your labour" .