Abu Bakr bin Abu Musa Ash'ari narrates that I heard my father saying in front of the enemies: The Messenger of Allah (peace and blessings be upon him) said: "Indeed, swords are the keys to Paradise." A destitute man said: Did you hear this hadith from the Messenger of Allah (peace and blessings be upon him)? He replied: Yes. The man drew his sword, broke its sheath, turned to his companions and said: Peace be upon you. Then he rushed towards the enemy and was martyred while fighting in jihad.