The World Federation One Stop Fiqh

Ruling 1957

The person to whom one gives zakat must be a Twelver (Ithnā ʿAsharī) Shia. If he gives zakat to a person whom he believes to be a Shia and later realises that he was not a Shia, then based on obligatory precaution he must give zakat again even if he had made investigations about the person or he had relied upon something that was legally authoritative.