זוהר שמות — דף סד ע”ב

Parashah Beshalah. Who can express the mighty acts of the Lord - this includes the Supernal Mother who, though hidden, is the source of all the Gevurot. Rabbi Elazar and Rabbi Abba discuss the secret of Ishmael and Esau and the mystery of the four exiles. Ishmael received his portion in this world and was granted the covenant for his sake, but in the future Israel will inherit it. The secret of the waters failed there is that the holy waters, the abundance of Supernal Wisdom, do not reach that deficient place.