Saidina Qais RA courage had been known in all the battlefields he performed with Rasulullah ﷺ while he was still alive. And it remains to be known in the battles he had passed after his death. The courage that is always based on truth and honesty in lieu of fraud and cunning, in an open and forward way, not by spreading the issue from behind, nor by bad plots, which of course make the culprit must bear the pressing difficulties. Since Saidina Qais RA threw away his extraordinary ability in deciplating fluid and tongue-tongue, and he turned to the brave and open-minded man. Saidina Qais RA is satisfied with this new disposition, and is willing to bear the consequences and difficulties alternating with the willing heart.
On the battlefield Shiffin, Jamal, and Nahrawan,Saidina Qais RA is one of the heroes who fought without fear of death. Saidina Qais RA was the one who brought the Ansar flag by shouting: This flag is the flag of unity ... Fighting with Rasulullah ﷺ and Gabriel the bearer of assistance ... Will not be afraid if only Ansar raisers .. And no one else becomes his supporter ..
Furthermore Mu'awiyah tried with deception and deception - which was not limited to just one form - to arouse Ali's anger at Saidina Qais RA, until finally Ali called him from Egypt. On this occasion, Saidina Qais RA had a favorable opportunity to use his intelligence to develop a plan. With his intelligence, Saidina Qais RA knew that Mu'awiyah had a role in slandering him, after he failed to withdraw Saidina Qais RA to his side to antagonize Ali and use his leadership to help him.
Qais's courage reached its peak of honesty and maturity after Ali was martyred and Al-Hasan was charged.Saidina Qais RA regarded Al-Hasan as a suitable figure according to the Shari'ah to become the Commander of the Faithful, so that Saidina Qais RA was engaged to him and stood beside Al-Hasan as a defender, irrespective of the dangers that would befall. When Mu'awiyah forced them to draw the sword,Saidina Qais RA is rose to lead five thousand soldiers with shaved heads as bare heads as a sign of mourning over Ali's death. However, Hasan finally succumbed and preferred to wound the wounded Muslims, by ordering to stop the war who had spent the life and wealth, then consult Mu'awiyah and then to Mu'awiyah.
From: Sunan at-Tirmidhi (Jami-al-Tirmidhi). Chapter 2, Salah (Prayers)
Narrated/Authority of Muhammad ibn Ibrahim
Narrated/Authority of Qais Ibn Saad