ভূমিকা
Interestingly, he begins his response by swearing, just as Allah (SWT) did before him. Again, the purpose behind swearing is to convey importance to the statement that will follow that swear. As we know, it is highly disliked that a person swears in general, but if he has to swear, then he cannot swear about anything but Allah (SWT). In this case, the Prophet (SA) swears by Allah (SWT) but does so in an eloquent way.
He swears by the Lord who sent him as prophet and chose him as holding communion to convey the Message. The reason why the Prophet (SA) choses to swear in that manner is to remind us (through Imam Ali) that he is the Seal of Messengers who is the representative of God. Hence, he does not speak out of his own free will and whatever he is about to say, is not from his personal wishes or an exaggeration from him.
Everything the Prophet (SA) utters is directly the word of God without addition or subtraction. After the swearing by Allah (SWT) who appointed him to his position, the Prophet (SA) answers the question by presenting a condition, and that is, “Whenever the tale of this gathering of us is mentioned in an assembly of the people of the earth in which a group of our adherents and lover are present…” He lists a series of blessings in two separate statements which shall benefit those devotees.