A summary of what we said so far would be that the Holy Prophet (s.a.w) in one of Hadiths stressed the point that his hadiths should be narrated and recorded. In another group he said:
Dont let it be that someone out of annoyance or aggravation should say Show it to me in the Quran, when one of my Hadiths is narrated for him. No, this statement is incorrect. You must not say that I speak not except on the basis of revelation, I say nothing except the truth.
Remembering these introductory facts we may now go on to a study of the alterations they made after the prophets death. From that moment on, his supporters (who were the subjects of his speeches address) turned to oppose him, thus becoming the vast source of the alteration of Islamic truths.
In the following discussions we will prove that the Prophet (s.a.w) dictated the collection of religious commandments to Imam Ali (a.s), and the Imam also recorded them in a book called [Al-Jameah]. If you had heard the terms, [Jafr] and [Jameah] mentioned in the Shiite Hadiths, [Jameah] is this very book. After Imam Ali Ibn Abi Talib (a.s) this valuable collection was passed onto each of the Holy Imams (a.s). And occasionally they would show it to other certain persons and they used to extract Hadiths form it. According to existing reliable sources, this collection was made of leather and was seventy [Dhera] long. As such the Holy Prophet dictated his Hadith or that which was revealed to him and which mankind needed until Resurrection Day, all of it, to Imam Ali and he, in turn, wrote it down and left it for the Holy Imams.
The Holy Prophet (s.a.w) communicated to his supporters and companions those of the Islamic religious laws which were needed by the Muslims of his time. This means those laws that concerned events which occured at that time and the Muslims questioned him about, or points that was necessary to notify them of. There was a series of matters however, whose time of enactment had not yet arrived. These, he left as a trust with his executor Imam Ali (a.s) so that in their time he or his descendants would relate them to the people. The Holy Prophet proclaimed the command or ruling of that which was needed during his own lifetime and then commanded that his sayings be related to others and for them to be written down for safekeeping as a legacy for future generations. Islam at that time was comprised of the Holy Quran and these types of the Prophets saying and or the relating of his religious actions, together making up the Prophets Sunnat, which is in turn comprised of two parts, Hadith and Sireh.