Genesis 21:25-26, 30

At the same time, Abraham confronted Abimelech over the matter of a well of water that Abimelech’s servants had taken. Abimelech said, “I have no idea who did this; you never told me about it; this is the first I’ve heard of it.”

Abraham said, “It means that when you accept these seven sheep, you take it as proof that I dug this well, that it’s my well.”