Sirach 5:14
Clementine_Vulgate(i)
14 Si est tibi intellectus, responde proximo: sin autem, sit manus tua super os tuum, ne capiaris in verbo indisciplinato, et confundaris.
DouayRheims(i)
14 If thou have understanding, answer thy neighbour: but if not, let thy hand be upon thy mouth, lest thou be surprised in an unskilful word, and be confounded.