One verse

Srimad Bhagavatam 5.14.35

5.14.35

क्‍वचिन्मिथो व्यवहरन् यत्किञ्चिद्धनमुपयाति वित्तशाठ्येन ॥ ३५ ॥

kvacin mitho vyavaharan yat kincid dhanam upayati vitta-sathyena.

kvacit
sometimes or somewhere
mithah vyavaharan
transacting with each other
yat
whatever
kincit
little bit
dhanam
material benefit or wealth
upayati
he obtains
vitta-sathyena
by means of cheating someone of his wealth.

Sometimes conditioned souls exchange money, but in due course of time, enmity arises because of cheating. Although there may be a tiny profit, the conditioned souls cease to be friends and become enemies.