DHU'L-HIJJAHIt is Sunnah to fast the first nine days of Dhul-Hijjah, especially the day of `Arafah, for those who are not performing Hajj. This is confirmed by the following hadiths:
1. Abu Qatadah (may Allah be pleased with him) is reported to have said that the Prophet (peace and blessings be upon him) said: "Fasting on the day of `Arafah is an expiation for two years, the year preceding it and the year following it. Fasting the day of `Ashurah is an expiation for the year preceding it." (Reported by "the group," except for Al-Bukhari and At-Tirmidhi)
2. One of the wives of the Prophet (peace and blessings be upon him) said: “Allah’s Messenger used to fast the [first] nine days of Dhul-Hijjah, the day of `Ashurah, and three days of each month." (Reported by Abu Dawud).
