Here, the Prophet (peace and blessings be upon him) did a number of things. Firstly, he honored the addressee and accorded him the due respect. Secondly, he mentioned in his message a common factor between the addressee and himself.
This can be attested to by recalling the famous hadith in which the Archangel Jibril came to the Prophet asking him about faith, Islam, ihsan (i.e., perfection), and the Hour; the Prophet answered him in full detail and further commented that the questioner was Jibril who came to teach the Companions – using this method in cooperation with the Prophet – the matters of their religion. (This hadith can be found in Muslim)
Sometimes, the Prophet used to raise questions in a way to raise the people’s interest in the matter at hand or to draw their attention to the importance of something he intended to handle. In addition, he often used this way to revisit the terminology adopted by people and to incorporate new meanings in old terms. Abu Hurairah reported Allah's Messenger (peace and blessings be upon him) as saying,
It was the habit of the Prophet that when he marched for battle all Muslims capable of fighting would accompany him and no one was ever allowed to be left behind except with the Prophet’s permission. Moreover, when he dispatched military expeditions, he would command a group of Muslims to remain with him to witness the revelation of the Qur’an in order for them to convey these revealed parts and teach them to those who set out for jihad upon their return. So they learn from them what Allah revealed to His Prophet in their absence, while the Prophet sent some other men into military expeditions. This is understood from Allah’s saying,
(Onislam / 23 Jan 2013)
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