Battle of Hunayn
Allah has already helped you in many battles, including the day of Hunayn, when your numbers made you proud but did not benefit you. The earth felt narrow despite its vastness, and you turned away.
9:25Allah hath given you victory on many fields and on the day of Huneyn, when ye exulted in your multitude but it availed you naught, and the earth, vast as it is, was straitened for you; then ye turned back in flight;