The following are online citations from Moshe Chafetz's 1710 work Melekhet Machashevet, found on the internet.
Not all links are still active, but relevant text is excerpted here in full.
"Ch. 25, v. 37: "Es kas'p'cho lo si'tein lo b'neshech" - When you give alms or a loan to a needy person, do it with a pleasant countenance. Don't give it with a nasty bite. (Rabbi Moshe Cheifetz in M'leches Mach'she'ves)"
For more information: The Chafetz Project
Any and all information about Melekhet Machashevet or Moshe Chafetz is greatly appreciated.
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