Tosefta for Proverbs 30:32

אִם־נָבַ֥לְתָּ בְהִתְנַשֵּׂ֑א וְאִם־זַ֝מּ֗וֹתָ יָ֣ד לְפֶֽה׃

If thou hast done foolishly in lifting up thyself, Or if thou hast planned devices, lay thy hand upon thy mouth.