Ammar Yasir was one of the special companions of the Noble Prophet (s.a.w) possessed such a high degree of faith that the Noble Prophet (s.a.w) had stated: Ammar is replete with faith from head to toe, and faith has blended with (and become part of) his flesh and blood.”7
After the death of the Noble Prophet (s.a.w) he continued to be of those who fiercely supported Imam ‘Ali (a.s), and when the battle of Siffin commenced, he fought on the side of the Imam (a.s). One day, coming out of the ranks of the Imam’s (a.s) army, he stationed himself before the enemy forces and said: “O’ Lord! You are aware that if I were to realize that Your happiness lies in my hurling myself into the seas, I would surely do so; and if I were to know that Your happiness lies in that I fling myself upon the point of a sword so that it enters into my stomach and emerges from the back of my neck, I would certainly do so. I know that today, Your happiness lies in waging a battle with these sinning and corrupt people, and had I known of an act that would have pleased You more, I would have surely opted for it.”
Then, raising his voice, he said: “Whoever desires Allah’s pleasure and does not desire to return to his wealth and children should come to me.”
He was eventually martyred after displaying great valor and courage in the battlefield. Reaching his dead body, the Commander of the Faithfuls(a.s) sat down, placed his head upon his thighs and, as he wept, said: “O’ Death! It appears that you are totally familiar with those, whom I love; you come and take them away from me.”( Paighambar Wa Yaran, vol. 5, pp. 24-28; Bihar al-Anwar, vol. 8, pg. 524 )