And Jacob fell upon his face to the ground before the foundation stone, and he prayed before the Holy One, blessed be He, saying: Sovereign of all worlds! If Thou wilt bring me back to this place in peace, I will sacrifice before Thee offerings of thanksgiving and burnt offerings, as it is said, "And Jacob vowed a vow, saying" (Gen. 28:20). There he left the well, and thence he lifted up his feet, and in the twinkle of the eye he came to Haran, as it is said, "And Jacob went on his journey, and came to the land of the children of the east" (Gen. 29:1); and the (text) says, "And Jacob went from Beer-Sheba, and went to Haran" (Gen. 28:10). "And the Holy God is sanctified in righteousness" (Isa. 5:16). The angels answered and said: Blessed art Thou, O Lord, the Holy God.
Jacob's Journey of Haran
Pirkei DeRabbi Eliezer 35:9