وَحَدَّثَنِي مَالِكٌ، عَنْ زَيْدِ بْنِ أَسْلَمَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ أَعْطُوا السَّائِلَ وَإِنْ جَاءَ عَلَى فَرَسٍ ‏"‏ ‏.‏

Malik related to me from Zayd ibn Aslam that the Messenger ofAllah, may Allah bless him and grant him peace, said, "Give to abeggar even if he comes on a horse." Translation Not Available

Book reference: Muwatta Imam Malik Book 58 Hadith 1846
Web reference: Muwatta Imam Malik Book 58 Hadith 3