Suwaid bin Ghaflah says that a companion (may Allah be pleased with him) who was appointed by the Prophet Muhammad (peace be upon him) to collect zakat came to us. Suwaid says: I sat with him and heard him say that I have been instructed not to take any milch animal, and not to combine what is separate nor separate what is combined. Then a man came to him with a she-camel having a large hump and said, "Take this." But he refused to take it.