Genesis 14:23-24
14:23 that I will take nothing belonging to you, not even a thread or the strap of a sandal. That way you can never say, ‘It is I who made Abram rich.’
14:24 I will take nothing except compensation for what the young men have eaten. As for the share of the men who went with me – Aner, Eshcol, and Mamre – let them take their share.”