When Amirul Momineen (a.
When Amirul Momineen (a.s.) returned to the Messenger of Allah (S), His Eminence said: Those Jinns came here before you, in whose hearts the Almighty Allah had created your fear. And they have become Muslims and I have accepted their Islam.” Ali bin Ibrahim has narrated that Surah Munafiqun was revealed in the Battle of Bani Mustaliq which occurred in 5th Hijri.
It was because after the return from that battle, the Holy Prophet (S) had halted at a well which had less water and Anas bin Siyar, a confederate of Ansar and Jahja bin Saeed Ghiffari who was a neighbor of Umar came to the well and both lowered their buckets into the well. By chance their buckets hit each other and this developed into a dispute. Jahja slapped Siyar and he began to bleed. Siyar called Khazraj and Jajha called Quraish and a great mischief was about to occur.
Abdullah bin Ubayy heard the commotion and asked about it and when people explained the matter, he became infuriated and said: “I never wanted to join this trip.” Now we are most degraded among the Arabs and I don’t think we will survive. I am helpless to hear such things and unable to prevent them.
Then he said to his companions: “These are the fruits of your acceptance and kindness that you gave them accommodation in your houses and helped them through your wealth; protected them and gave them refuge. Your women were widowed in their defense and your children were orphaned. If you had driven them out of Medina they would have been in need of others.
If we reach Medina, our respectable folks will drive out the down-trodden ones.” At that time Zaid bin Arqam who was just entering puberty was present there. At that time the climate was very hot and the Holy Prophet (S) was seated under a tree with Muhajireen and Ansar. Zaid reported about Ibn Ubayy and the Prophet said: “Son, perhaps you heard wrongly.” “No,” he said. “Perhaps you are saying this in anger. He said, “No, by Allah.” “Perhaps he has tried to fool you.” “No.
by Allah, it is not so.” The Prophet told Saqaran, his slave to put the litter on the camel, after which he mounted and set off from there followed by his army, marched till the next morning, halting only for prayers. Abdullah swore that he did not say what had been alleged, but on the next march the Prophet received Surah Munafiqun, convincing Abdullah. This divine communication made the Prophet so heavy that his camel was near lying down under him.