Sorry I was a bit late in posting guys…I still have an hour before Fajr and hope that you read this before your Fajr and the day of Arafah…
The ninth day of Zulhijjah is the day of 'Arafah. It is the day when pilgrims stand on the plain of 'Arafah to pray. On this day, Muslims all over the world who do not witness the annual Hajj, should spend the day in fasting in preparation for the three days festivity following `Eidul Adha.
Abu Hafasah 
said the Prophet :saw: said: “Fasting on the day of 'Arafah absolves the sins for two years: the previous year and the coming years, and fasting on 'Ashura, (the tenth day) of Muharram atones for the sins of previous years.” (Reported by Jama’ah except Bukhari and Tirmidhi)
In another hadith, the Prophet’s wife Hafsah (raa) said: “Four things the Messenger of Allah never neglected: Observing fast on the day of 'Ashura, (on the tenth of Muharram), three days every month, and offering Fajr sunnah prayers early in the morning.” (Muslim)
These ahadiths are proof that fasting on the tenth of Zulhijjah, the day before `Eidul Adha was a lifelong practice of the Prophet :saw: as his wife reported.
There are some reports that fasting is prohibited on the day of 'Arafah. However, it must be understood that this refers to a person performing Hajj. If a person is on Hajj, there is no fast for him or her on the day of 'Arafah. That is undoubtedly a blessing for him because of the hardships of the pilgrimage. In a hadith reported by Umm al-Fadl she said: “The companions doubted whether the Prophet was fasting on 'Arafah or not. She decided to prove to them that he was not, so she said, 'I sent to him milk, which he drank while he was delivering the Khutbah on ‘Arafah.’” (Bukhari)
