Muhammad ibn Yaqub, from a number of our companions, from Sahl ibn Ziyad, from Ahmad ibn Muhammad, who said: I (narrator) asked Abu al-Hasan عليه السلام, peace be upon him, about ‘a man who arrived from a journey in the month of Ramadan and had not tasted anything before the sun’s decline.’ Imam عليه السلام said: “He fasts.”