Battle of Ahzab

And when the believers saw AlAhzab (the Confederates), they said: \"This is what Allah and His Messenger (Muhammad SAW) had promised us, and Allah and His Messenger (Muhammad SAW) had spoken the truth, and it only added to their faith and to their submissiveness (to Allah). Among the believers are men who have been true to their covenant with Allah [i.e. they have gone out for Jihad (holy fighting), and showed not their backs to the disbelievers], of them some have fulfilled their obligations (i.e. have been martyred), and some of them are still waiting, but they have never changed [i.e.they never proved treacherous to their covenant which they concluded with Allah] in the least. 33:22-23