Chapter on Obligation of Fasting

And from him, from Muhammad ibn Abi Umayr, from Hammad ibn Uthman, from Mammar ibn Yahya, who said: I heard Abu Ja’far عليه السلام, peace be upon him, saying: “Allah سبحانه وتعالى does not ask a servant about a prayer after the five (daily prayers), nor about a fast after (month of) Ramadan.”