This verse speaks to the core theme of **Al-Kahf**.
Reflect on the meaning: "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 he i.e., al-Khiḍr restored it. Moses said, "If you wished, you could have taken for it a payment."".