He told that he heard God's Messenger say, “The Byzantines will be defeated at your hands and God will defend you, but let none of you be so careless as not to employ his arrows.”* * i.e. they must not neglect to practise archery. The idea is that although God defends them, this does not absolve them from effort. Muslim transmitted it.
Reported by Muslim (No. 1918a) and Ahmad (No. 16792). Cited in Mishkat al-Masabih (No. 3862).
‘Uqbah ibn ‘Āmir (may Allah be pleased with him) reported: I heard the Messenger of Allah (may Allah’s peace and blessings be upon him) say: "Lands will be laid open for you, and Allah will spare you the fight. So, let none of you fail to play with his arrows.”