Following are a number of back-translations as well as a sample translation for translators of Proverbs 9:9:

• Kupsabiny: “If you teach a knowledgeable person, that person’s wisdom increases and/or when you teach a righteous person, (his/her) learning/wisdom increases.” (Source: Kupsabiny Back Translation)
• Newari: “If [you] give insight to a wise person,
  he will become wiser still.
  If [you] instruct a righteous person,
  he will have even more insight.” (Source: Newari Back Translation)
• Hiligaynon: “If you (sing.) teach a wise-one, his wisdom will-increase more. If you (sing.) teach a righteous man, what he had-learned will-increase more.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Be-advising a wise-person and his wisdom will-be-added-to. Teach a righteous-person and his skill/intelligence will-be-added-to.” (Source: Kankanaey Back Translation)