surely you (could) have taken
Then they proceeded: until, when they came to the inhabitants of a town, they asked them for food, but they refused them hospitality. They found there a wall on the point of falling down, but he set it up straight. (Moses) said: "If thou hadst wished, surely thou couldst have exacted some recompense for it!"
他俩又同行,来到了一个城市,就向城里居民求食,他们不肯款待。后来他俩在城里发现一堵墙快要倒塌了,他就把那堵墙修理好了,穆萨说:“如果你意欲,你必为这件工作而索取工钱。”