She took the oath of allegiance to the Messenger of Allah (ﷺ) and said to him: Messenger of Allah, a poor man stands at my door, but I find nothing to give him. The Messenger of Allah (ﷺ) said to her: If you do not find anything to give him, put something in his hand, even though it should be a burnt hoof.
Sunan Abi Dawud Book 9, Hadith 112
← Previous Hadith The above mentioned tradition has also been transmitted by 'Ali through a different chain of narrators in a similar manner from the Prophet(ﷺ).

Sunan Abi Dawud Book 9, Hadith 111 Next Hadith → Asma‘ said My mother came to me seeking some act of kindness from me during the treaty of the Quraish (at Hudaibiyyah). While she hated Islam and she was a polytheist. I said Messenger of Allah (ﷺ), my mother has come to me while she hates Islam and she is a disbeliever. May I do an act of kindness to her? He replied Yes, do an act of kindness to her.

Sunan Abi Dawud Book 9, Hadith 113