Is it true that no one will carry the burden of another ?

Quran is clear on the matter, please read carefully and then research the issue yourself, you don't need anybody's "Ijazaah" for it, I will explain, it may change your perspective of our beautiful Deen;

"He who finds the right path does so for himself; and he who goes astray does so to his own loss, and no one who carries a burden bears another's load. We never punish till We have sent a messenger. Quran 17:15

The important thing to add here is that God sent Prophet Mohammad Pbuh as the official messenger for the whole of humanity and His official message is the Quran. Furthermore, His official message encourages us to spread the message to those who are not yet aware of it. And here is the important bit related to the issue at hand; The only time we will be responsible for part of the burden of others will be if we mislead them. The only, I repeat only 100% certain manner to avoid misleading people is to stick to the official message of God because it is impossible, again I repeat, impossible to declare any other source to be 100% authentic besides Quran because of Quran 9:101.

Hence even if there is a 0.1% chance that a certain report ascribed to Prophet Mohammad Pbuh could be wrong and yet we are propagating it as if it is the very command of God and say it reached a 1000 people through word of mouth or internet forums, now try to imagine how much will be a part of the burden of 1000 people. Remember, when it comes to the Quran anybody can verify it in minutes as opposed to the Hadith literature where others are claiming it is authentic and there is no possible way for us to verify it except to "believe" them, then why on Earth will anybody take such a risk if our eternity depends on it ?

Here is the verse;

Some of the Arabs of the desert around you are hypocrites, and some of the people of Madina are stubborn in hypocrisy. You are not aware of them; We know them and will punish them twice, and they will be sent to a harrowing doom. Quran 9:101

As is clear from the above nobody including Bukhari nor Muslim nor the rest of the lot could possibly know for sure who those hypocrites were if not even the Prophet of God was given this knowledge. Why is this so important? Please keep the following verse in mind;

Hence, on Resurrection Day they shall bear the full weight of their own burdens, as well as some of the burdens of those ignorant ones whom they have led astray: oh, how evil the load with which they shall be burdened! Quran 16:25

God here is referring to the sheer collective weight of those that were lead astray with these words "how evil the load with which they shall be burdened!". God has thus warned us, before resorting to the kneejerk "but it is in the Hadith" we should think and ask ourselves, how did Bukhari or Muslim resolve Quran 9:101

Ironically Muslim collection has this report and none which would identify the twelve hypocrites;

Qais reported: I said to 'Ammar: What is your opinion about that which you have done in case (of your siding with Hadrat 'Ali)? Is it your personal opinion or something you got from Allah's Messenger (may peace be upon him)? 'Ammar said: We have got nothing from Allah's Messenger (may peace be upon him) which people at large did not get, but Hudhaifa told me that Allah's Apostle (may peace be upon him) had especially told him amongst his Companion, that there would be twelve hypocrites out of whom eight would not get into Paradise, until a camel would be able to pass through the needle hole. The ulcer would be itself sufficient (to kill) eight. So far as four are concerned, I do not remember what Shu'ba said about them. Muslim [38:6688]