Abram is not tempted by King's gift and was considerate towards fellow men - Genesis 14:22-24
Abram said to the king of Sodom, I have taken an oath to the Lord, the Most High God, maker of heaven and earth, that I will not take so much as a thread or the cord of a shoe of yours; so that you may not say, I have given wealth to Abram. Give me nothing but the food which the fighting-men who went with me have had; but let Aner and Eshcol and Mamre have their part of gifts.