Qur'an...

Qur'an, 53:2-5 They knew that the Prophet (s) wanted to certify the caliphate of Ali (s) and the infallible imams of his progeny especially with a written covenant and therefore they prevented him from writing that book as the second caliph Umar had confessed later on through an argument between him and ibn Abbas.[1] If you ponder on the saying of the Prophet (s) Come on!

Let me write you a book after which you will never go astray and on his saying in the tradition of Thaqalayn: I have left to you what if you keep to, you will never go astray; the Book of Allah and my progeny [1] Sharh Nahjol Balagha, vol.3 p.114. you will know that the purpose of the two sayings is the same.…