Have faith in Allah's promise of victory for you if you remain steadfast in your faith and practice it with sincerity.

This hadith is about Muslims gaining victory over the Jews in a fight. It is reported by Abdullah b. 'Umar that Allah's Messenger said that Muslims will be victorious against the Jews until a stone would say to them, "Muslim, here is a Jew behind me; kill him." This hadith teaches us that we should not fear our enemies and have faith in Allah's promise of victory for us if we remain steadfast in our faith and practice it with sincerity. We must also remember to be merciful even towards those who oppose us as Allah has commanded us to do so in His book.