I said to him: ’May I be sacrificed for you, is there another ‘Id for the Muslims, besides the two ‘Ids?‘ He replied, ‘Yes, O Hassan, there is a greater and more important ‘Id than these.’ I then asked, ‘And what day is that?’ He replied, ‘It is the day when ’Amir al-Mu’minin (a.s.) was appointed as the banner and lighthouse for people.’ I then said, ‘May I be sacrificed for you, what then should we do on this (day)?’ He replied, ‘Fast, O Hassan, increase your blessings upon Muhammad and his family, and denounce before Allah those who did injustice to them. Verily, the prophets, may the blessings of Allah be upon them, would command the successors to celebrate the day when they were appointed as a successor, as ‘Id.’ I then asked, ‘What happens if one fasts on such day?’ He replied, ‘Fasting on this day is equal to fasting for sixty months. Do not ignore fasting on the twenty-seventh of the month of Rajab, for it is the day when prophethood came down up on Muhammad (sw). Its reward is equal to sixty months (of fasting) for you.”’