זוהר בראשית — דף קמו ע”א

The Zohar explains that “a quiet man, dwelling in tents” holds both sides, Abraham and Isaac; Jacob therefore came to Esau with wisdom and guile, supported by the patriarchs. Jacob confronted Samael, Esau’s rank, and wrestled with him until dawn, on a night when the moon was diminished; he had remained alone, which one is advised not to do at night, and Samael came to accuse him. Strong from the side of Abraham and of Isaac, Jacob was struck at the hollow of his thigh. By morning Samael grew weak and Jacob was blessed. He received four blessings and used the weakest against Esau, keeping the others for the time when the nations would gather against his sons, as the parable of the king and the bandit illustrates.