Chapter on Ruling of the Traveller and the Sick Person Regarding Fasting

And from him, from Ali, from his father, from Ibn Abi Umayr, from Abu Ayyub, who said: I (narrator) said to Abu Abdillah عليه السلام, peace be upon him, “What is the least distance in which the traveller shortens (the prayer)?” Imam عليه السلام said: “One barid.”