Following are a number of back-translations as well as a sample translation for translators of Proverbs 10:31:

• Kupsabiny: “A righteous person speaks words of wisdom,
  but the words of a lying person should be stopped.” (Source: Kupsabiny Back Translation)
• Newari: “From the mouth of the righteous
  come the words of wisdom.
  The lying tongue will be cut off.” (Source: Newari Back Translation)
• Hiligaynon: “What the righteous man says has wisdom, but what a deceitful man says has no wisdom, therefore he will-be-destroyed.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Wiseness is made-known in the words of the righteous/just, but liars will-later (=future certainty) be-silenced.” (Source: Kankanaey Back Translation)
• English: “Righteous people say things that are wise,
  but God will shut the mouths of people who say what is not true.” (Source: Translation for Translators)