Bible Verses About Pledge: General references

He said, "I will send you a kid from the flock of goats." She said, "Will you also give me something as a guarantee until you send it"

He answered, "What should I give you as a guarantee?" She said, "Your seal, with its cord, and the staff you're carrying in your hand." So he gave them to her, then went and slept with her; and she conceived by him.

She got up and went away, took off her veil and put on her widow's clothes.

Y'hudah sent the kid with his friend the 'Adulami to receive the guarantee items back from the woman, but he couldn't find her.