When in Siffeen the men of Muawiya  overpowered the men of Ameerul Momineen (A.S.) and occupied the bank of River Euphrates and denied taking its water, Imam said:

They are asking you morsels of battle. So either you remain in ignominy and the lowest position or drench your swords with blood and quench your thirst with water. Real death is in the life of subjugation while real life is in dying as subjugators. Beware, Muawiya is leading a small group of insurgents and has kept them in dark about the true facts with the result that they have made their bosoms the targets of death.