Chapter on Categories of Fasting and the Explanation of All of Them with Clarification

Ahmad ibn Muhammad ibn Isa, from Muhammad ibn Abi Umayr, from Muhammad ibn Abi Hamzah, from Muawiyah ibn Ammar, who said: I (narrator) asked Abu Abdillah عليه السلام, peace be upon him, about ‘fasting the days of al-Tashriq.’ Imam عليه السلام said: “As for in the cities, there is no problem, but as for in Mina, then no.”