Komentarz do Diwrej ha-jamim I 1:41

Hamran and Eshban But in the Pentateuch (Gen. 36:26) it is written, “Hemdan.” At first, they were precious and desirable (חֲמוּדִין וְנֶחֱמָדִין) as righteous men, but at the end they were as ugly as a donkey. So is the way of a donkey: at first it is pretty and at the end it becomes ugly, but a horse is at first ugly and later pretty.