The fortress had lofty fortifications and ten thousand Jews...
The fortress had lofty fortifications and ten thousand Jews resided in it and were engaged in agricultural activities in its vicinity. This remarkably fortified fortress had an extraordinary and heavy gate which could be moved by forty people. Since Khaybar had turned into the enemy base and the spy den of the opponents of the Islamic faith, Muslims departed for Khaybar one month following the Treaty of Hudaybiyya.
In the outset, Muslims were headed by those who failed to do anything, until the Noble Prophet (S) said that he would give the banner to one who had obtained the satisfaction of God Almighty and His Messenger (S), one who is loved. He handed the banner to Imam ‘Ali (as) the next day. Imam ‘Ali (as) departed for the colossal fortress of Khaybar with the Muslim army. A Jew from the top the wall asked him: “Who are you?” He replied: “I am ‘Ali ibn Abi Talib.” The Jew shouted: “O Jews!
You shall be defeated.” It was at that time that Mirhab, the Jewish castellan proceeded to the gate to fight ‘Ali (as). ‘Ali (as) forcefully dislocated the gate and threw it aside, thus Muslims could enter the castle and conquer it.[^1] At any rate, the blessed Verse in question is saying that God Almighty has promised to reward believers before long with abundant spoils and impede the enemy from inflicting harm upon them.
He made the conquest of Khaybar happen earlier so that believers entertain no doubts as to the words of the Noble Prophet (S) regarding their triumph. It is definitely a reference to the conquest of Khaybar which occurred prior to the conquest of Mecca in the same year at Hudaybiyya. Further details are to be found in exegetic and historical sources.
Promising the achievement of spoils in future rests on Divine Omnipotence and Omniscience. Qur’anic Verses engender trust in God Almighty and educating monotheists.