Muhammad ibn Yaqub, from Ali ibn Ibrahim, from his father, from Ibn Abi Umayr, from Muawiya ibn Ammar: I (narrator) said to Abu Abdillah عليه السلام, peace be upon him: “I order the slave-girl to look whether dawn has risen or not, and she says: ‘It has not risen, so I eat.’ Then I look and find that it had already risen when she looked.” Imam عليه السلام said: “You complete your day and make it up (qada). Indeed, had you been the one who looked, there would have been no making it up upon you.”