Narrated `Abdullah bin `Amr:

The Prophet said, "Al-Ka`ba'ir (the biggest sins) are: To join others (as partners) in worship with Allah, to be undutiful to one's parents," or said, "to take a false oath." (The sub-narrator, Shu`ba is not sure) Mu`adh said: Shu`ba said, "Al-Ka`ba'ir (the biggest sins) are: (1) Joining others as partners in worship with Allah, (2) to take a false oath (3) and to be undutiful to one's parents," or said, "to murder (someone unlawfully).

Narrated Ash-Shu`bi:

I heard Abu Juhaifa saying, "I asked `Ali 'Have you got any Divine literature apart from the Qur'an?' (Once he said...apart from what the people have?) `Ali replied, 'By Him Who made the grain split (germinate) and created the soul, we have nothing except what is in the Qur'an and the ability (gift) of understanding Allah's Book which He may endow a man with and we have what is written in this paper.' I asked, 'What is written in this paper?' He replied, 'Al-`Aql (the regulation of Diya), about the ransom of captives, and the Judgment that a Muslim should not be killed in Qisas (equality in punishment) for killing a disbeliever." (See Hadith No. 283,Vol. 4)

Narrated Abu Juhaifa:

I asked `Ali "Do you have anything Divine literature besides what is in the Qur'an?" Or, as Uyaina once said, "Apart from what the people have?" `Ali said, "By Him Who made the grain split (germinate) and created the soul, we have nothing except what is in the Qur'an and the ability (gift) of understanding Allah's Book which He may endow a man, with and what is written in this sheet of paper." I asked, "What is on this paper?" He replied, "The legal regulations of Diya (Blood-money) and the (ransom for) releasing of the captives, and the judgment that no Muslim should be killed in Qisas (equality in punishment) for killing a Kafir (disbeliever).

Narrated `Abdullah bin `Amr:

A bedouin came to the Prophet and said, "O Allah's Apostle! What are the biggest sins?: The Prophet said, "To join others in worship with Allah." The bedouin said, "What is next?" The Prophet said, "To be undutiful to one's parents." The bedouin said "What is next?" The Prophet said "To take an oath 'Al-Ghamus." The bedouin said, "What is an oath 'Al-Ghamus'?" The Prophet said, "The false oath through which one deprives a Muslim of his property (unjustly).

Narrated Jabir bin `Abdullah:

I gave the Pledge of allegiance to the Prophet that I would listen and obey, and he told me to add: 'As much as I can, and will give good advice to every Muslim.'

Narrated Ibn `Umar:

I heard `Umar (delivering a sermon) on the pulpit of the Prophet.

Narrated Masruq:

`Aisha said, "If anyone tells you that Muhammad has seen his Lord, he is a liar, for Allah says: 'No vision can grasp Him.' (6.103) And if anyone tells you that Muhammad has seen the Unseen, he is a liar, for Allah says: "None has the knowledge of the Unseen but Allah."

Narrated `Aisha:

Whoever tells you that the Prophet concealed something of the Divine Inspiration, do not believe him, for Allah said: 'O Apostle Muhammad! Proclaim (the Message) which has been sent down to you from your Lord, and if you do it not, then you have not conveyed His Message.' (5.67)