And Jacob went out from Beer-sheba (Gen. 28:10). May it please our master to teach us where a man who has unintentionally taken the life of another man may take refuge. Thus do our masters teach us: A man who has unintentionally killed another person may take refuge either in one of the three cities of refuge in Trans-Jordan or in one of the three cities in Canaan. Our patriarch Jacob took refuge in Haran.
He fled there because he feared that his wicked brother, Esau, would slay him. When the Holy One, blessed be He, saw that Jacob was deeply distressed, He appeared before him in a dream. R. Abahu said in the name of R. Simeon the son of Lakish: As soon as the stones beneath his head beheld the glory of the Holy One, blessed be He, they dissolved into each other and formed one stone. Whence do we know this?
Before he went to sleep, Scripture states: He took stones of the place (Gen. 28:11), but after he awakened, it is written: He took the stone (ibid., v. 18).