So the servant took an oath by putting his hand under the thigh of his master, Abraham. He swore to follow Abraham’s instructions.
Then he loaded ten of Abraham’s camels with all kinds of expensive gifts from his master, and he traveled to distant Aram-naharaim. There he went to the town where Abraham’s brother Nahor had settled.
One day Abraham said to his oldest servant, the man in charge of his household, “Take an oath by putting your hand under my thigh.