After Abraham routed the four kings and rescued his nephew Lot, the king of Sedom came out to meet him with an offer that looked generous and was actually a trap. Take the spoil, the king said. Just give me the people. Targum Pseudo-Jonathan on Genesis 14:23 preserves Abraham's answer with a sharpness the Hebrew only hints at.
Not a thread. Not the latchet of a sandal. Not one strap of leather from anything that belongs to you.
Why so absolute? Because Abraham understood how wealth gets retold. He could already hear the rumor that would follow him through Canaan for the rest of his life — Abraham the Hebrew? The rich one? The king of Sedom made him. In one sentence a lifetime of listening to the promises of the Lord would be reassigned to the generosity of a doomed city.
The Targum's gloss names the fear plainly: lest thou magnify thyself in saying, I have enriched Abram from mine own. The danger was not the wealth. The danger was the story attached to the wealth. Abraham refuses not because thread and sandal-straps are worth much, but because even one thread, in the mouth of the wrong witness, becomes the whole garment.
This is the Maggid's lesson in Abraham's tiny word lo. Be careful whose credit you wear (Genesis 14:23). Some gifts are loans the giver keeps collecting on forever.