Is it permissible for one who gave charity to a rich person to reclaim his charity?

Question:
If a person gave charity to someone and then discovered that he was rich, can he reclaim his charity?

Answer:
If his appearance was one of poverty, there is no harm in that. If his appearance was one of poverty, he resembled the poor, and you thought he was poor and gave to him, it suffices you according to the scholars, and the sin is upon that person.
Q: Does one who does not give charity commit a sin?
The Shaykh: In the case of zakah, he commits a sin. As for other than zakah, he does not commit a sin, except if there is dire necessity. If the poor person knows that he is in dire necessity, it is obligatory for him to rescue him. However, the obligatory duty is zakah, while the rest is according to the circumstances. Other charities are according to the circumstances.