Mishle 23:7-9

Orthodox Jewish Bible

⁷ For as he reckoneth in his nefesh, so is he. Eat and drink, saith he to thee, but his lev is not with thee.

⁸ The morsel which thou hast eaten shalt thou vomit up, and lose thy pleasant devarim.

⁹ Speak not in the oznayim of a kesil (fool), for he will despise the seichel of thy words.