Midrasch zu Tehillim 72:10

Another interpretation: He had thought and said: Possessions from outside the land have no blessing in them. He was therefore squandering them. R. Hosha'ya said: A certain old man said to me: < I > am telling you < something in > the form of midrash; so, whenever you expound it, tell it in my name.⁴⁵Gen. R. 78:12. Esau is going to restore to Jacob all that he received from Jacob. It is so stated (in Ps. 72:10): THE KINGS OF TARSHISH AND OF THE ISLES SHALL RETURN TRIBUTE. "Shall bring tribute" is not written here, but SHALL RETURN TRIBUTE. I told him: This is a good saying: I will expound it in your name. He said to him: Surely if, what he had knowingly given him and had pressed upon him, that which he did not wish to receive, even as stated (in Gen. 33:9): THEN ESAU SAID: I HAVE ENOUGH—< Surely if > he would return < that >, then how much the more would they (the children of Esau) do so in the case of things which they had taken from Israel by force. In that hour I thanked him.