Muhammad ibn Ya'qub, from Muhammad ibn Yahya, from Ahmad ibn Muhammad ibn Isa, from al-Haytham ibn Abi Masruq, from al-Hasan ibn Ali, from Marwan ibn Muslim, from Abdullah ibn Hilal ibn Khaqan, said: I (narrator) heard Abu Abdillah عليه السلام, peace be upon him, saying: "The one who leaves zakat, while it has become obligatory for him, is like the one who withholds it, while it has become obligatory upon him."