Following are a number of back-translations as well as a sample translation for translators of Proverbs 21:13:

• Kupsabiny: “A person who does not listen to a poor man who cries for help,
  he, too, will not be listened to when he is crying for help.” (Source: Kupsabiny Back Translation)
• Newari: “If anyone does not listen
  to the weeping of the helpless,
  no one will listen
  to the sound of his weeping either.” (Source: Newari Back Translation)
• Hiligaynon: “If you (sing.) do- not -pay-attention to the poor when they ask for help, you (sing.) will- also -be-ignored when you (sing.) ask for help.” (Source: Hiligaynon Back Translation)
• Kankanaey: “The one who does not pay-attention-to the poor who begs-for-mercy, the time will also arrive when he begs-for-mercy and nobody will help him.” (Source: Kankanaey Back Translation)
• English: “There are people who refuse to listen when poor people cry out for help;
  but some day they themselves will cry out for help, and no one will hear them.” (Source: Translation for Translators)