What Should We Do If We Find Out That The Person To Whom We Gave Zakat Was Rich?

What should we do if we find out that the person to whom we gave zakat was rich?

The believer who is responsible for the payment of zakat must research the one to whom s/he will give zakat. If one gives zakat to a person whom s/he concludes after doing research to be an eligible recipient, the zakat given to him/her becomes valid. If one gives zakat so someone without doing research and later it turns out that this person is one of those whom zakat can be given, his zakat is valid. However, if it is understood that this is not the case, the zakat will not be valid, it must be given again. (Ibn Abidin, Radd al-Muhtar, III, 302, 303).

Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWA