Proverbs 23:8 in the King James Version
The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.
Context
7 for as he thinks about the cost, so he is. “Eat and drink!” he says to you, but his heart is not with you.
8 You will vomit up the morsel which you have eaten and waste your pleasant words.
9 Don’t speak in the ears of a fool, for he will despise the wisdom of your words.