The Prophet ordered him to be brought and when he was led to the place...
The Prophet ordered him to be brought and when he was led to the place, he said, “O Messenger of Allah (S), my eyes are so inflamed that I cannot see, and the pain in my head is extreme.” The Prophet caused him to lie down and put his head in his lap when he rubbed saliva from his blessed mouth on Ali’s eyes and head, saying, “O Lord protect him from the harm of heat and cold.” Ali was then instantly cured, and the Prophet gave him the white standard assuring him that “Jibraeel attends you right Mikaeel on your left, Israel in your front, and Israfeel in your rear.
Victory advances before you and fear already fills the hearts of your enemies whose books forewarn them that their destroyer will be Ilyas, and when you announce yourself Ali they will be overcome Insha Allah! Advance deliberately and before joining battle summon them to embrace Islam.
Verify if Allah should give religious guidance to a single individual of them through your instrumentally, it will be a more glorious conquest than if you should capture all the red camels.” Ali, at the head of the Muslims then made an attack on the town, which Marhab came out to defend. He wore a coat of mail and a helmet upon which was a large stone ring. Marhab recited the following Rajaz: “The Jews of Khyber know that I am Marhab.
I dive into my weapons and I attack in a daring way.” Imam Ali (a.s.) said in reply: “I am one whose mother has named him Haider. I step into the battlefield like a ferocious lion, I will throw you away like a grain.” The two champions each chanting a boastful ode, engaged furiously, their first blows being mutually parried. Ali’s second blow cleft the stone ring helmet and head of his adversary, who reeled and fell from his horse.
In another report it is mentioned in that he said: I am Ali Ibn Abi Talib (a.s.). Upon this, a Rabbi said: “Now you Jews are defeated by the Book that the Almighty Allah sent for Prophet Musa (a.s.). Then awe appeared in their hearts. When Imam Ali (a.s.) killed Marhab, the surviving Jews immediately sought shelter behind their walls barring after them the gate, which was so massive as to require twenty men, or according to another tradition forty men to open and shut it.
Aided by divine power, Ali seized the outer ring of the gate and shook it so violently that the whole fortress trembled The gate broke away and Ali using it as a shield rushed into the town which he soon overcome.