Muhammad bin Muslim bin Tadras محمد بن مسلم بن تدرس أبو الزبير · The Book of Zakah

"I heard the Messenger of Allah say: 'With regard to grazing camels, for every forty a Bint Labun. No differentiation is to be made between camels when calculating them. Whoever gives it seeking reward will be rewarded for it. Whoever refuses, we will take it and half of his camels, as one of the rights of our Lord. And it is not permissible for the family of Muhammad to have any of them."'

"No Zakah is due on wheat or dates unless the amount reaches five Awsuq. No Zakah is due on silver unless the amount reaches five Awaq. No Zakah is due on camels until the number reaches five Dhawd."

"Which of us will be the first to following you (in death)?" He said: "The one of you who has the longest arms." They took a stick and started to measure their arms. But Sawdah was the first one to follow him. She was the one who had the longest arms, because she used to give in charity a great deal.