Translation:

3. And an announcement from Allah and His apostle to the people (assembled) on the day of the Great Pilgrimage that Allah and His apostle dissolve (treaty) obligations with the pagans. If then ye repent it were best for you; but if ye turn away know ye that ye cannot frustrate Allah. And proclaim a grievous penalty to those who reject faith.

Notes (Tafseer)

1248. The great day of Hajj is either the 9th of Zul-hijjah ('Arafa), or the 10th (the Day of Sacrifice).