Hazrat Qais says that I participated in the Battle of Qadisiyyah on the side of the Muslims. Hazrat Sa’d bin Abi Waqqas was the commander of the Muslims in this battle. When Rustam came with his army, Hazrat Amr bin Ma’di Karib Zubaidi passed through the ranks of the Muslims and said to them,“O group of Muhajireen! Become brave lions, the real lion is the one who does not care for his life. It is the temperament of the Persians that when they throw down their spear, they are like goats. Around their territory are great walls which arrows cannot cross.”We said to him,“O Abu Thawr! Beware of them.”Then we shot arrows; one arrow struck the horse of the king of the Persians. Then Hazrat Amr attacked him, killed him, and obtained his belongings, which included two gold bracelets, a sheet, and a silk robe. (2) A man from Thaqif fled and went to inform the polytheists, and while pointing towards Bajilah, he said,“People are coming from that side.”Then they sent sixteen elephants towards us, on which warriors were mounted, and sent two elephants towards all the people. On that day, Hazrat Sa’d was saying,“Move back from Bajilah.”Hazrat Qais says that in the Battle of Qadisiyyah, we were one fourth of the people. And Hazrat Umar (may Allah be pleased with him) gave us one fourth of the war equipment, and we used it for three years. (3) After that, Hazrat Jarir came with a delegation in the company of Hazrat Ammar bin Yasir to Hazrat Umar. Hazrat Umar said to them,“You both did not tell me about those two houses of yours. Even so, I ask you, and I can judge from your faces which of the two houses is better?”Hazrat Jarir said,“O Commander of the Faithful! I will inform you. One house is the one that yields fewer dates from the land of Arabia, and the other house is the land of Persia, its heat, its intensity, and its vast valley, that is, Mada’in.”He says that Hazrat Ammar contradicted me and said,“You have lied.”Hazrat Umar said,“You are lying.”Then he said,“Shall I tell you about your leader, is he sufficient for you?”The people said,“He is neither sufficient nor does he know the principles of governance.”Then Hazrat Umar removed him and sent Hazrat Mughirah bin Shu’bah as the leader.