Following are a number of back-translations as well as a sample translation for translators of Proverbs 11:30:

• Kupsabiny: “What a righteous person does brings life,
  but/and again a person who is wise, brings people together.” (Source: Kupsabiny Back Translation)
• Newari: “The seed of good work
  will become a tree of life.
  Wise people win the hearts of people.” (Source: Newari Back Translation)
• Hiligaynon: “The deeds of a righteous man can-help others to become-good and prolong their lives. And he can-win/[lit. bring] the people with his wisdom.” (Source: Hiligaynon Back Translation)
• Kankanaey: “The behavior of the righteous/just, it can-be-compared to a tree that gives life, but what a criminal does, death is its outcome.” (Source: Kankanaey Back Translation)
• English: “Those who live righteously will live for a long time,
  but those who act violently will destroy their own lives (OR, those who are wise will have many people come and live with them).” (Source: Translation for Translators)