Proverbs 30:10 in the World English Bible
“Don’t slander a servant to his master, lest he curse you, and you be held guilty.
Context
9 Lest I be full, and deny thee, and say, Who is the LORD? or lest I be poor, and steal, and take the name of my God in vain.
10 Accuse not a servant unto his master, lest he curse thee, and thou be found guilty.
11 There is a generation that curseth their father, and doth not bless their mother.