Surah 81. At-Takwir, Ayah 22

See surah {68}, note [3]. The characterisation of Muhammad as "this fellow-man of yours" is meant to stress his absolute humanness, and thus to counteract any possibility on the part of his followers to deify him. (See also note [150] on 7:184 ).

 i.e., Muḥammad (ﷺ).

After describing the credentials of the Archangel Gabriel, the Text now appeals to the people to consider their own "Companion", the Prophet, who had been born among them and had lived with them, and was known to be an honorable, truthful, and trustworthy man. If Gabriel was the one who brought the Message to him, then there was no question of demoniacal possession. And the Prophet had seen him in his inspired vision "in the clear horizon".