Genesis 38:16-18

16Not realizing that she was his daughter-in-law, he went over to her and said, “Come now, let me sleep with you.”

“What will you give me for sleeping with you?” she inquired.

17“I will send you a young goat from my flock,” Judah answered.

But she replied, “Only if you leave me something as a pledge until you send it.”

18“What pledge should I give you?” he asked.

She answered, “Your seal and your cord, and the staff in your hand.” So he gave them to her and slept with her, and she became pregnant by him.