Muhammad ibn Ya'qub, from Ali ibn Ibrahim, from his father, from Ibn Abi Umayr, from Ibn Udhaynah, from Zurarah, from Abd al-Karim ibn Utbah al-Hashimi, from Abu Abdillah عليه السلام, peace be upon him, who said: Imam al-Sadiq عليه السلام said: "The Messenger of Allah سبحانه وتعالى, Allah's سبحانه وتعالى blessings be upon him and his family, used to divide the charity of the people of the deserts among the people of the deserts, and the charity of the people of the towns among the people of the towns, and He صلى الله عليه وعلى آله وسلم would not divide it among them equally. Rather, the Prophet صلى الله عليه وعلى آله وسلم would divide it according to the number of them who were present before him. And He صلى الله عليه وعلى آله وسلم said, ‘There is nothing fixed in that.’"