Proverbs 20:14

¹² The hearing ear, and the seeing eye, the LORD hath made even both of them.

¹³ Love not sleep, lest thou come to poverty; open thine eyes, and thou shalt be satisfied with bread.

It is naught, it is naught, saith the buyer: but when he is gone his way, then he boasteth.

¹⁵ There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.

¹⁶ Take his garment that is surety for a stranger: and take a pledge of him for a strange woman.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: “Worthless, worthless!” says the buyer, but on the way out, he gloats.
KJV: It is naught, it is naught, saith the buyer: but when he is gone his way, then he boasteth.
WEB: “It’s no good, it’s no good,” says the buyer; but when he is gone his way, then he boasts.
ASV: It is bad, it is bad, saith the buyer; But when he is gone his way, then he boasteth.
DARBY: Bad! bad! saith the buyer; but when he is gone his way, then he boasteth.
BLB: “Bad, bad,” says the one buying, and having gone away himself, then he boasts.

ÅB: Dårlig, dårlig! sier kjøperen; men når han går bort, roser han seg.
OTB: «Det er ikke bra, det er ikke bra!» sier kjøperen, men så går han bort og skryter.
B1930: Dårlig, dårlig! sier kjøperen; men når han går bort, roser han sig.

1 Thessalonians 4:6
That no man go beyond and defraud his brother in any matter: because that the Lord is the avenger of all such, as we also have forewarned you and testified.
Read in context