Allah's kindness to believers and their congratulation with victory

Indeed God has helped you on many occasions, even during the battle of Hunain, when you were elated with joy at your numbers which did not prove of the least avail, so that the earth and its vast expanse became too narrow for you, and you turned back and retreated.

Then God sent down a sense of tranquility on His Apostle and the faithful; and sent down troops invisible to punish the infidels. This is the recompense of those who do not believe.

Yet God may turn (even) after this to whomsoever He please, for God is compassionate and kind.