What is the virtue of the Day of Arafah?

<p style=";text-align:left;direction:ltr">Weather of Arabia - From sunrise on the ninth day of Dhu al-Hijjah, the pilgrims of the Sacred House of God begin heading to Upper Arafat to perform the greatest pillar of Hajj, which is standing at Arafat, after spending the Day of Tarwiyah in Mina. Among the most prominent virtues of this day are:</p><ul style=";text-align:left;direction:ltr"><li style=";text-align:left;direction:ltr"> It is the day of completion of religion and completion of blessings</li><li style=";text-align:left;direction:ltr"> His fasting expiates two years</li><li style=";text-align:left;direction:ltr"> It is the day of forgiveness of sins and liberation from Hell</li><li style=";text-align:left;direction:ltr"> It&#39;s the best of days</li></ul><p style=";text-align:left;direction:ltr"></p>