From him, from Muhammad ibn Isa ibn Abi Badr, from Ubayd ibn Zurarah, from Abu Abdillah عليه السلام, peace be upon him, who said: (Imam عليه السلام was asked) about ‘a man who is fasting, and it is said to him, ‘Are you fasting?’ So he says, ‘No.’ Abu Abdillah عليه السلام, peace be upon him, said: “This is a lie.”