Genesis 14:23
“That I will not take from a thread even to a shoelatchet, and that I will not take any thing that is thine, lest thou shouldest say, I have made Abram rich:”
KJV
Read in Genesis 14Meaning
Abram refuses everything from a thread to a sandal strap so the king cannot claim credit for his wealth.
Read carefully
The refusal is not a blanket condemnation of wealth, since Genesis has already described Abram as very wealthy.
Reflection
Integrity can require refusing a legitimate-looking gain when accepting it would distort the meaning of one's allegiance.