Proverbs 30:6

6 Do not add to his words, or he will rebuke you and prove you a liar.

Read Proverbs 30:6 Using Other Translations

Add thou not unto his words, lest he reprove thee, and thou be found a liar.
Do not add to his words, lest he rebuke you and you be found a liar.
Do not add to his words, or he may rebuke you and expose you as a liar.