How much charity must be given to a rich person who becomes poor?
The Torah (Deut.15:8) speaks about providing a poor person with "what he lacks". This implies, for example, that if he was accustomed to having a horse to ride on and a servant to run in front of him, we have to give him those things (Talmud, Kesubos 67; Shulchan Aruch, Yoreh Deah 250:1). However, it seems clear that this applies only to things that could be regarded as personal necessities; we aren't required to supply a person with luxuries or non-personal items, even if he was accustomed to having them.
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