"Balaghul Mubeen" - Clear Conveyance:
The responsibility of the messengers mentioned in Qur-aan in verses 5:92, 16:35, 16:82, 24:54, 29:18, 36:17, 64:12 : "Balaghul Mubeen", i.e., Clear Conveyance, is taken by some people as a proof in Qur-aan of the dependency of Qur-aan on Hadeeth or Sunnah to explain it. They say that the Qur-aan is "Conveyance" which becomes "Clear" only through hadeeth.
Normally, a Muslim should have no objection to anybody praising Hadeeth or Sunnah, as these two things, meaning Traditions and Practices, are nothing but the reported traditions and practices of our beloved prophet Muhammad (peace upon him). The differences arise only because they include hundreds of thousands of traditions and practices that have been attributed to our prophet, which, on careful study, we come to know that they are planted with the sole intention of making fun of the verses of Qur-aan or to commit rejection of the verses.
I give a comparison. Besides Qur-aan, we Muslims believe in Towrah (Torah) and we Muslims believe in Injeel (Gospel) and in all books sent down by Allaah. Right? We have to believe in them. Because it is a necessary part of our faith. But would we believe entirely and act upon the Towrah and Injeel as possessed by the People of the Book, the Jews and the Christians? No. because we find part of those books in conflict with our religion. Allaah says these people hide a portion of the Scripture (5:15) Therefore, our belief is on what was actually revealed to Moosa (Moses) and Eesa (Jesus -peace upon them). in its entirety.
Similarly, our respect and belief would surely be in, what our prophet Muhammad (peace upon him) actually said and did and not in every thing reportedly said and done by him, which constitute rejection and derision of the verses of Qur-aan.
In about thirty verses Allaah has called the verses of Qur-aan as (fully) explained and "Clear Signs". 2:99, 2:118, 2:187, 2:219, 2:221, 2:242, 2:266, 3:103, 3:118, 5:75, 5:89, 6:55, 6:105, 6:157, 10:15, 12:1, 19:73, 22:16, 22:72, 24:1, 24:18, 24:58, 24:59, 24:61, 29:49, 34:43, 45:25, 46:7, 57:9, 57:17, 58:5.
2:185 (part) " The month of Ramadan in which was revealed the Qur-aan, a guidance for mankind, and clear proofs from the guidance, and the criterion (of right and wrong)."
From the above verse, we come to know that the Explanations (or clarifications) come from the Guidance, the Qur-aan itself, which has been called Guidance for the mankind in the same verse.
Although the explanations or clarifications reside within the Guidance itself (Qur-aan or another Book of Allaah), it requires a prophet or a messenger to reveal it or bring it out to the people, as we learn from the following verse.
20:134 "And if We had destroyed them with some punishment before it, they would assuredly have said: Our Lord! If only You had sent unto us a messenger, so that we might have followed Your signs before we were humbled and disgraced! "
In the verse previous to the above verse, the people refuse to believe in the messenger and demand that he bring a miracle to them from his Lord, saying: "If only he would bring us a miracle from his Lord!". So Allaah says: "if We had destroyed them with some punishment before it (i.e., before sending the messenger), they would assuredly have said: Our Lord! If only You had sent unto us a messenger, so that we might have followed Your signs before we were humbled and disgraced! "
The reason given for why the people would have asked for a messenger to be sent to them, is : so that they might have followed the Signs of Allaah, the verses of the Book of Allaah.
And what enables the messenger to bring out the explanations. Allaah tells our prophet :
" Say you: "This is my Way: I do invite unto Allaah - on insight - I and whoever follows me. Glory to Allaah! and never will I join gods with Allaah!" 12:108
It is the basweerah, the insight granted by Allaah, which makes evidence clear as the seeing with one's eyes, which enable the messengers to radiate the knowledge to their followers.