Take caution when entering into war; use it only as a last resort after exhausting all other options; think carefully before engaging in warfare; consider the consequences before engaging in battle.

This hadith, narrated by Jabir bin 'Abdullah, speaks to the reality that war is a deceitful thing. It should not be taken lightly or entered into without careful consideration. The Prophet Muhammad warned against the dangers of war and its potential for destruction and loss of life. He taught that it should only be used as a last resort when all other options have been exhausted. This hadith serves as an important reminder to us all that war is never something to take lightly or enter into without thoughtfulness and caution.