Quran is fully explained by Prophet (SAW)
[16:44]
With clear signs and Books (We sent the Messengers). And We have also sent down to you (O Muhammad [sal-Allâhu 'alayhi wa sallam])
the Dhikr [reminder and the advice (i.e. the Qur'ân)],
that you may explain clearly to men what is sent down to them, and that they may give thought.
Tafsir Ibn Kathir
And We have also revealed the Dhikr to you), meaning the Qur'an,
﴿لِتُبَيِّنَ لِلنَّاسِ مَا نُزِّلَ إِلَيْهِمْ﴾
(so that you may clearly explain to men what was revealed to them,) meaning, sent down from their Lord, because you know the meaning of what Allah has revealed to you, and because of your understanding and adherence to it, and because We know that you are the best of creation and the leader of the Children of Adam. So that you may explain in detail what has been mentioned in brief, and explain what is not clear.
﴿وَلَعَلَّهُمْ يَتَفَكَّرُونَ﴾
(so that perhaps they may reflect.) meaning, they should examine themselves and be guided by it, so that they may attain the victory of salvation in this world and the next.
