Abu Rafi' · The Book on Zakat

the Messenger of Allah sent a man from Banu Makhzun to collect charity, so he said to Abu Rafi: "Accompany me so that perhaps you may have some of it." So he said: "Not until I ask the Messenger of Allah." So he went to the Prophet to ask him, and he said: "Charity is not lawful for us, and to be the Mawda of a people to be the same as them."