Muhammad ibn Yaqub, from Muhammad ibn Ismail, from al-Fadl ibn Shadhan, and Abu Ali al-Ashari, from Muhammad ibn Abd al-Jabbar, all together from Safwan ibn Yahya, from Ibn Muskan, from al-Halabi, from Abu Abdillah عليه السلام, peace be upon him: Imam عليه السلام said: “If the fasting person makes himself vomit, then he must make up that day (of fasting). But if vomiting overcomes him without him making himself vomit, then let him complete his fast.”