Proverbs 23:6-8

23:6. Eat not with an envious man, and desire not his meats:
23:7. Because, like a soothsayer, and diviner, he thinketh that which he knoweth not. Eat and drink, will he say to thee: and his mind is not with thee.
23:8. The meats which thou hadst eaten, thou shalt vomit up: and shalt lose thy beantiful words.