Chapter on Extent of Illness in Which Breaking the Fast Becomes Obligatory

Muhammad ibn Yaqub, from Ali ibn Ibrahim, from his father, from Ibn Abi Umayr, from Ibn Udhayna, who said: I (narrator) wrote to Abu Abdillah عليه السلام, peace be upon him, asking Imam عليه السلام: “What is the limit of the illness whose possessor breaks the fast, and the illness whose possessor leaves prayer while standing?” Imam عليه السلام said: “Rather, man is a witness over himself,” And Imam عليه السلام said: “That is up to him; he is more knowledgeable of himself.”