The Prophet's voice was silenced by caliphal decree. The authentic record was replaced with official narration.
In the early caliphate of Abu Bakr (11–13 AH), the caliph compiled approximately five hundred hadith of the Prophet. He then burned them.
The account is preserved in Tadhkirat al-Huffaz by the Sunni hadith scholar al-Dhahabi (d. 748 AH / 1348 CE) — not a Shia source. Al-Dhahabi records that Aisha reported her father stayed up all night, then the next morning asked her to bring his hadith collection, and burned it in her presence. When asked why, Abu Bakr replied: "I feared that I had narrated some of it from a man I trusted, but the man was not as I believed."
"Aisha said: My father collected the hadith of the Messenger of Allah — they were five hundred in number. He spent the night turning them over, and in the morning he said to me: 'Bring me these hadith.' I brought them and he burned them."Tadhkirat al-Huffaz, Vol. 1, p. 5 — Shams al-Din al-Dhahabi (d. 748 AH)
A collection of five hundred hadith represents the accumulated oral record of the Prophet's statements, rulings, and practices as compiled by his closest successor. Its destruction was not an act of humility. It was an act of information control.
The stated reason — uncertainty about the reliability of narrators — is structurally impossible to accept at face value. The Companions who transmitted hadith were known personally to Abu Bakr. The hadith had been compiled precisely because they were trusted.
The actual effect: the written record of the Prophet's voice — as preserved by his first successor — was removed from the historical field before Imam Ali (A.S.) could appeal to it.
If Abu Bakr's burning of his collection was a personal act, Umar's prohibition was a state policy. The second caliph issued an explicit, public decree banning the transmission of hadith throughout the Muslim community.
The prohibition was enforced. Companions who transmitted hadith were warned, summoned, and in some accounts confined. Abu Dharr al-Ghifari — one of the closest companions of the Prophet and one of his most faithful narrators — was eventually exiled to Rabadha, where he died alone.
"Umar detained Abu Dharr, Ibn Masud, and Abu Darda in Medina and said: 'You have transmitted too many hadith from the Messenger of Allah. You shall not leave until I investigate what you have narrated.'"Tabaqat al-Kubra, Vol. 2 — Ibn Sa'd (d. 230 AH)
"Umar wanted to write down the Sunnah, and he consulted the Companions. They all agreed that he should write it. Then Umar spent a month in deliberation, asking Allah for guidance. Then he said: 'I wanted to write the Sunnah, but I remembered a people before you who wrote books and devoted themselves to those books and abandoned the Book of Allah. By Allah, I will not obscure the Book of Allah with anything at all.'"Tarikh al-Tabari, Vol. 1 — al-Tabari (d. 310 AH)
The stated reason — protecting the Quran from competition with hadith — is theologically coherent on the surface. But examine the structural consequence: if hadith cannot be freely transmitted, then interpretation of the Quran requires official guidance. And official guidance flows from the caliph.
The prohibition did not benefit the Quran. It benefited the caliphate. It created an epistemological monopoly: the state controlled which statements of the Prophet could be cited, in what context, and by whom.
Imam Ali (A.S.) was the person most capable of transmitting the authentic Prophetic record — he had lived with the Prophet, been his son-in-law, and served as his scribe. A ban on hadith transmission was, in practice, a ban on Ali's testimony.
Umar's prohibition was maintained through his caliphate (13–23 AH) and effectively continued under Uthman (23–35 AH). It was not until Imam Ali's own caliphate (35–40 AH) that free transmission began to be restored — too briefly, before his assassination.
Under Muawiyah (41–60 AH), a new policy emerged: not the prohibition of hadith, but the fabrication of hadith. Where the earlier caliphs had silenced the record, the Umayyads rewrote it. State-sponsored narrators were rewarded for producing hadith that praised Muawiyah, condemned Ali (A.S.), and legitimized Umayyad rule.
"Muawiyah wrote to his governors: 'Do not accept the narration of anyone who reports a hadith in favor of Ali and his family. But have the narrators narrate in praise of Uthman, his companions, and the early caliphs.'"Sharh Nahj al-Balagha — Ibn Abi al-Hadid al-Mutazili (d. 656 AH), Vol. 11
Against this forty-year ban, followed by systematic counter-narration, Imam Ali (A.S.) and the Imams who followed him maintained the authentic Prophetic record through private transmission. Al-Kafi — compiled by al-Kulayni (d. 329 AH) from chains running through the Imams — represents the accumulated counter-record of this suppressed period.
The Imams of Ahl al-Bayt were the only figures with unbroken domestic access to the Prophet's practice — in his household, with his daughter, in his physical space. Their narrations were the ones the state most needed to contain.
Al-Amanah — the Sacred Trust — did not surface in public narration during the suppression. It was transmitted within households, within the chains of the Imams, within the students of Imam al-Sadiq (A.S.) — four thousand of them, documented, in the second century AH, transmitting what the state had spent forty years trying to erase.
What was suppressed became the very thing that defined the underground tradition. The ban made Al-Kafi necessary.