Following are a number of back-translations as well as a sample translation for translators of Proverbs 21:11:

• Kupsabiny: “A wise person understands/realizes when (he) is given advice,
  but a foolish understands/realizes when (he) is punished.” (Source: Kupsabiny Back Translation)
• Newari: “When proud people are punished,
  those who lack wisdom will gain insight.
  When the wise are instructed,
  they will gain insight.” (Source: Newari Back Translation)
• Hiligaynon: “If a mockers is-punished, the ones-who-are-like them who have- no -knowledge can-learn to be-wise. A wise man become- more -wiser if he is-intructed.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Someone who knows nothing can become-reflective/thinking if he sees a mocker be-punished, but the wise-person can be taught by-means-of advice.” (Source: Kankanaey Back Translation)
• English: “When those who ridicule others are punished, even those who do not have good sense see that, and they become wise,
  and when those who are wise are taught, they become wiser.” (Source: Translation for Translators)