Kedoshim: Chapter 10

It is forbidden for a man to look at a woman's beauty


Rabbi Shimon says that the souls of Adam and Eve came from such a high place that no one could look at their great light and beauty. Only after they sinned was Adam even able to look at Eve and recognize her for the purpose of mating. We learn that men should not look at women lest they be tempted and acquire bad thoughts that will come to them in the night. It is worse still if a man is mating with his wife and has thoughts about another woman, as this results in the birth of impure children.