Umm Bujaid - and she was one of those who gave the pledge to the Prophet - she said to the Messenger of Allah: "There is a needy person who stands outside my door, but I cannot find anything to give to him." So the Messenger of Allah said to her: "If you do not find anything to give him except a burnt trotter then hand it over to him."
Jami` at-Tirmidhi Book 7, Hadith 49
← Previous Hadith the Messenger of Allah said: "Indeed charity extinguishes the Lord's anger and it protects against the evil death."

Jami` at-Tirmidhi Book 7, Hadith 48 Next Hadith → "The Messenger of Allah gave to me on the Day of Hunain, and he was the most hated creature to me. But he did not stop giving to me until he was the most loved creature to me."

Jami` at-Tirmidhi Book 7, Hadith 50