Islam at that time was comprised of the Holy Quran and these...
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". TO RELATE THE PROPHET'S NARRATION BECOMES PRHIBITED What happened after the Prophets death?
Dhahaby one of the great Sunni scholars, relates that after Abu Bakr took over the leadership of the government he gathered the Muslims and the companions of the Prophet (s.a.w) saying: "You relate the Prophets Hadith and certainly you disagree on certain points with one another, and in the future you will find more of these points of disagreement. It is for certain that after you the general public will have even more differences of opinion. As such, you should relate nothing from the Prophet.
Tell anyone who asks you that there is the Quran among us, and to see its allowances as lawful and its prohibitions as unlawful". 89 (We see what a strange excuse he found and how he disguised wrong as right and we also see to what extent and precision the Holy Prophets' (s.a.w) prediction came to pass).
Qarzat Ibn Ka'ab one of the Prophets companions relates another event: "When Umar was sending us to take over the governing of Iraq he accompanied us to Sarar on foot and then said: "Do you know why I escorted you and saw you off? We replied: "You saw us off to show your respect for us and to honour us!" He said: "Other than that I had something else in mind.
You are going to a city where the resonance of the sound of its people reciting the Quran reaches the ears as the resonance of the sound of honey bees in their hives. Be careful lest you keep them from this by relating the Hadith of the Prophet of God (s.a.w). Do not narrate Hadith for them. I am your partner in (the spiritual reward of) this deed. Qarzat added that: "After these words by the caliph, I narrated not so much as one more Hadith of the prophet".
The inhabitants of Iraq having just become Muslims had never seen the Prophet of Islam (s.a.w). These new Muslims who have not seen their Prophet are avid and thirsty to obtain facts concerning him, and to hear his words and Hadith, and to become familiar with his actions and way of life. Because of this it is very probable that they would have said to Qarzat: "Relate some Hadiths for us" and Qarzat replied: "Umar has prohibited us, we cannot relate Hadith".