As he anticipated that the Holy Prophet would reconfirm on...
As he anticipated that the Holy Prophet would reconfirm on the Holy Qur'an and the as the two weighty things that he would leave among his people to follow, `Umar ibn al-Khattab ascribed irrational talk to the Holy Prophet—while the Holy Prophet is too sacred to talk irrationally—in order to underestimate his words or even his written documents in case the Holy Prophet would have written something.
As `Umar belittled the words of the Holy Prophet and ascribed him to hallucination, then it would have been unimportant to present his written document as pretext. From this cause, the Holy Prophet had to abstain from insisting on recording (or dictating) a document that he promised to save the Muslims from deviation! He therefore said, “Leave me and do not dispute with each other!
It is unsuitable to dispute in the presence of a Prophet.”[^2] In brief, the prohibition of recording in this situation was made in order to prevent stating the decision of the next leadership in a written form. The prohibiting from writing later on was the result of the contradiction between `Umar ibn al-Khattab’s opinions and the Holy Prophet’s traditions, instructions, and directives. Accordingly, the prohibiting from writing had two dimensions; one is political and the other is legislative.
What is I consider the most probable reason behind the prohibiting from writing and from recording the Hadith, in addition to all that which has been mentioned by the gentle scholars in the presentation of the seventh reason, was that `Umar ibn al-Khattab wanted to establish the conception of “an opinion that I have considered” (i.e. Ra’y ) and to allow the multiplicity of opinions in order to meet the jurisprudential shortage that very frequently embarrassed him.
Because they knew that the source of the religious laws was exclusively Almighty Allah and the Holy Prophet, the people did not accept to take these laws except from people who enjoyed elite relationship with the Holy Prophet and had full knowledge with the secrets of the divine revelation and its interpretation.
Furthermore, the two caliphs who came to power after the Holy Prophet had to encounter issues the dealing with which necessitated the issuance of verdicts deduced from personal opinions and away from the sacred texts.