Genesis 38:16-18

16And he turned unto her by the way, and said, Come, I pray thee, let me come in unto thee: for he knew not that she was his daughter-in-law. And she said, What wilt thou give me, that thou mayest come in unto me? 17And he said, I will send thee a kid of the goats from the flock. And she said, Wilt thou give me a pledge, till thou send it? 18And he said, What pledge shall I give thee? And she said, Thy signet and thy cord, and thy staff that is in thy hand. And he gave them to her, and came in unto her, and she conceived by him.