The Qur'an is the Speech of Allah
Allah swears by His creation, in which some of His signs can be seen in His creatures. These also indicate the perfection of His Names and Attributes. He then swears by the hidden things that they cannot see. This is an oath swearing that the Qur'an is His Speech, His inspiration and His revelation to His servant and Messenger, whom He chose to convey His Message, and the Messenger carried out this trust faithfully. So Allah says,
﴿ÝóáÇó ÃõÞúÓöãõ ÈöãóÇ ÊõÈúÕöÑõæäó - æóãóÇ áÇó ÊõÈúÕöÑõæäó - Åöäøóåõ áóÞóæúáõ ÑóÓõæáò ßóÑöíãò ﴾
(So I swear by whatsoever you see, and by whatsoever you see not, that this is verily the word of an honored Messenger.) meaning, Muhammad . Allah gave this description to him, a description which carries the meaning of conveying, because the duty of a messenger is to convey from the sender. Therefore, Allah gave this description to the angelic Messenger in Surat At-Takwir, where he said,
﴿Åöäøóåõ áóÞóæúáõ ÑóÓõæáò ßóÑöíãò Ðöì ÞõæøóÉò ÚöäÏó Ðöì ÇáúÚóÑúÔö ãóßöíäò ãøõØóÜÚò Ëóãøó Ãóãöíäò ﴾
(Verily, this is the Word of (this Qur'an brought by) a most honorable messenger. Owner of power (and high rank) with Allah, the Lord of the Throne. Obeyed and trustworthy.) (81:19-21) And here, it refers to Jibril. Then Allah says,
﴿æóãóÇ ÕóÜÍöÈõßõãú ÈöãóÌúäõæäò ﴾
(and your companion is not a madman. ) (81:22) meaning, Muhammad .
﴿æóáóÞóÏú ÑóÁóÇåõ ÈöÇáÇøòÝõÞö ÇáúãõÈöíäö ﴾
(And indeed he saw him in the clear horizon.) (81:23) meaning, Muhammad saw Jibril in his true form in which Allah created him.
﴿æóãóÇ åõæó Úóáóì ÇáúÛóíúÈö ÈöÖóäöíäò ﴾
(And he is not Danin with the Unseen.) (81:24) meaning, suspicious.
﴿æóãóÇ åõæó ÈöÞóæúáö ÔóíúØóÜäò ÑøóÌöíãò ﴾
(And it (the Qur'an) is not he word of the outcast Shaytan.) (81:25) This is similar to what is being said here.
﴿æóãóÇ åõæó ÈöÞóæúáö ÔóÇÚöÑò ÞóáöíáÇð ãøóÇ ÊõÄúãöäõæäó - æóáÇó ÈöÞóæúáö ßóÇåöäò ÞóáöíáÇð ãøóÇ ÊóÐóßøóÑõæäó ﴾
(It is not the word of a poet, little is that you believe! Nor is it the word of soothsayer, little is that you remember!) So in one instance Allah applies the term messenger to the angelic Messenger and in another instance He applies it to the human Messenger (Muhammad ). This is because both of them are conveying from Allah that which has been entrusted to them of Allah's revelation and Speech. Thus, Allah says,
﴿ÊóäÒöíáñ ãøöä ÑøóÈøö ÇáúÚóÜáóãöíäó ﴾
(This is the revelation sent down from the Lord of all that exists.)
﴿æóáóæú ÊóÞóæøóáó ÚóáóíúäóÇ ÈóÚúÖó ÇáÇøñÞóÇæöíáö - áÃóÎóÐúäóÇ ãöäúåõ ÈöÇáúíóãöíäö - Ëõãøó áóÞóØóÚúäóÇ ãöäúåõ ÇáúæóÊöíäó - ÝóãóÇ ãöäßõã ãøöäú ÃóÍóÏò Úóäúåõ ÍóÜÌöÒöíäó - æóÅöäøóåõ áóÊóÐúßöÑóÉñ áøöáúãõÊøóÞöíäó - æóÅöäøóÇ áóäóÚúáóãõ Ãóäøó ãöäßõã ãøõßóÐøöÈöíäó - æóÅöäøóåõ áóÍóÓúÑóÉñ Úóáóì ÇáúßóÜÝöÑöíäó - æóÅöäøóåõ áóÍóÞøõ ÇáúíóÞöíäö ÝóÓóÈøöÍú ÈöÇÓúãö ÑóÈøößó ÇáúÚóÙöíãö ﴾
(44. And if he had forged a false saying concerning Us,) (45. We surely would have seized him by his right hand,) (46. And then We certainly would have cut off Al-Watin from him,) (47. And none of you could have prevented it from him.) (48. And verily, this is a Reminder for those who have Taqwa.) (49. And verily, We know that there are some among you that deny.) (50. And indeed it will be an anguish for the disbelievers. (51. And verily, it (this Qur'an) is an absolute truth with certainty.) (52. So, glorify the Name of your Lord, the Most Great.)