Muwatta Malik, Book 49, Hadith 1681 (In-Book)

Yahya related to me from Malik from Zayd ibn Aslam from Ibn Bujayd (formerly al-Ansari) from his grandmother that the Messenger of Allah, may Allah bless him and grant him peace, said, "Give to the very poor, if only a roasted hoof."

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنِ ابْنِ بُجَيْدٍ الأَنْصَارِيِّ، ثُمَّ الْحَارِثِيِّ عَنْ جَدَّتِهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ رُدُّوا الْمِسْكِينَ وَلَوْ بِظِلْفٍ مُحْرَقٍ ‏" ‏ ‏.‏

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also referenced under: Book 49, Hadith 8 (USC-MSA)