After the departure of the Prophet...
After the departure of the Prophet, according to the Prophet’s wish, ‘Alī gave back to the people the trusts and charges that they had left with the Prophet. Then he went to Medina with his mother, the daughter of the Prophet, and two other women. Hijrat to the Prophet’s Death In Medina also ‘Alī was constantly in the company of the prophet in private and in public. The Prophet gave Fātima, his beloved daughter from Khadijah, to ‘Alī as his wife in the 2nd year of the Hijrah.
When the Prophet was creating bonds of brotherhood among the Muslims of Medina and the Muslims who had migrated to Medina, he selected ‘Alī as his own brother. He said, “O ‘Alī, you are my brother in this world as well as the hereafter.” ‘Alī was present in all the wars in which the Prophet participated, except the battle of Tabuk when he was ordered to stay in Medina in place of the Prophet. He did not retreat in any battle nor did he turn his face away from any enemy.
He never disobeyed the Prophet, so that the Prophet said, “‘Alī is never separated from the Truth nor the Truth from ‘Alī.” The courage of ‘Alī was proverbial. In all the wars in which he participated during the lifetime of the Prophet, and also afterward, he never displayed fear or anxiety. Although in many battles such as those of Uhud, Hunayn, Khaybar and Khandaq the aides to the Prophet and the Muslim army trembled in fear or dispersed and fled, he never turned his back to the enemy.
Never did a warrior or soldier engage ‘Alī in battle and come out of it alive. Yet, with full chivalry he would never slay a weak enemy nor pursue those who fled. He would not engage in surprise attacks or in turning streams of water upon the enemy. In the Battle of Khandaq, the Muslims had dug a ditch around their encampment. A very brave and famous Arab warrior, ‘Amr bin ‘Ubayd, jumped over the ditch with his horse and challenged the Muslims for combat with him.
His courage and bravery was so well-known that no one among the Muslims dared to answer his challenge. The only person who readily agreed to face ‘Amr was ‘Alī bin Abi Tālib. When ‘Alī was going to face ‘Amr, the Prophet said, “Today the total faith ( imān ) is going to face the total disbelief ( kufr ).” ‘Alī defeated ‘Amr, and all other brave warrior’s of the enemy retreated. In the Battle of Khaybar, the Muslim army attacked the fortresses of the Jews for many days but was not successful.