You know that the Qur'an is a complete, perfected Book. Allah commanded the exalted Prophet to convey nothing but the Qur'an.
29:45 (O Prophet) convey to people all that is revealed to you of the Book, and establish the Divine System. Establishment of the Divine System will shut off lewdness, stinginess, and bad conduct. This is so, because God’s Law is the Greatest Law that can give you eminence. And God knows whatever you people contrive on your own. [21:10, 21:24, 23:70, 43:43-44, 70:21-27. Fahasha includes miserliness, and Munkar is all behavior that goes against Permanent Values given in the Qur’an]
45:6 These are the verses of God We convey to you with truth. Then, in what HADITH, if not in God and His verses, will they believe?
45:7 Woe to every fabricating impostor! [26:222. This draws our attention to forged Ahadith]
45:8 (The impostor) who hears God’s verses conveyed to him, yet he is haughtily obstinate, as though he never heard them. So, announce to him grievous punishment.
45:9 For when he learns anything of Our verses, he belittles them. Theirs is a humiliating punishment in store.