Genesis

And the time drew nigh that Israel must die: and he called his son Joseph, and said unto him, If now I have found grace in thy sight, put, I pray thee, thy hand under my thigh, and deal kindly and truly with me; bury me not, I pray thee, in Egypt:

And Joseph found grace in his sight, and he served him: and he made him overseer over his house, and all that he had he put into his hand.

And he left all that he had in Joseph’s hand; and he knew not ought he had, save the bread which he did eat. And Joseph was a goodly person, and well favoured.

And the servant put his hand under the thigh of Abraham his master, and sware to him concerning that matter.

And the servant took ten camels of the camels of his master, and departed; for all the goods of his master were in his hand: and he arose, and went to Mesopotamia, unto the city of Nahor.