Narrated Ibrahim at-Tamimi's father: `Ali delivered a sermon saying, "We have no book to read except the Book of Allah and what is written in this paper which contains verdicts regarding (retaliation for) wounds, the ages of the camels (given as Zakat or as blood money) and the fact that Medina is a sanctuary in between Air mountain to so-and-so (mountain). So, whoever innovates in it an heresy or commits a sin or gives shelter in it, to such an innovator will incur the Curse of Allah, the angels and all the people, and none of his compulsory or optional good deeds of worship will be accepted. And whoever (freed slave) takes as his master (i.e. befriends) other than his real masters will incur the same (Curse). And the asylum granted by any Muslim is to be secured by all the other Muslims, and whoever betrays a Muslim in this respect will incur the same (Curse).

Narrated Ash-Shu`bi: Abu Juhaifa said, "I asked `Ali, 'Have you got any book (which has been revealed to the Prophet apart from the Qur'an)?' `Ali replied, 'No, except Allah's Book or the power of understanding which has been bestowed (by Allah) upon a Muslim or what is (written) in this sheet of paper (with me).' Abu Juhaifa said, "I asked, 'What is (written) in this sheet of paper?' `Ali replied, it deals with The Diyya (compensation (blood money) paid by the killer to the relatives of the victim), the ransom for the releasing of the captives from the hands of the enemies, and the law that no Muslim should be killed in Qisas (equality in punishment) for the killing of (a disbeliever).