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The Qur'an and the Sunnah
The Qur'an is the word of Allah, brought down to the heart of Muhammad ﷺ by the angel Jibril (Gabriel) (2:97), in the Arabic language (12:2). Near its opening it describes itself: ﴿ذَٰلِكَ ٱلْكِتَـٰبُ لَا رَيْبَ ۛ فِيهِ ۛ هُدًى لِّلْمُتَّقِينَ﴾ (“This is the Book about which there is no doubt, a guidance for those mindful of Allah”) (2:2).
Allah promised to protect it: ﴿إِنَّا نَحْنُ نَزَّلْنَا ٱلذِّكْرَ وَإِنَّا لَهُۥ لَحَـٰفِظُونَ﴾ (“It is We who sent down the Reminder, and We will surely guard it”) (15:9). It has been recited, memorised and written, word for word, from the Prophet's ﷺ time until today, and Allah has made it easy to remember (54:17). The Prophet ﷺ said: "The best of you are those who learn the Qur'an and teach it" (Sahih al-Bukhari 5027).
The second source of guidance is the Sunnah: the teachings, actions and example of the Prophet ﷺ, preserved in sahih (authentic) hadith. Allah says: ﴿مَّن يُطِعِ ٱلرَّسُولَ فَقَدْ أَطَاعَ ٱللَّهَ﴾ (“Whoever obeys the Messenger has obeyed Allah”) (4:80). The Sunnah shows how the Qur'an is lived: how to pray, how to fast, and how to treat people.
- Qur'an 2:97
- Qur'an 12:2
- Qur'an 2:2
- Qur'an 15:9
- Qur'an 54:17
- Sahih al-Bukhari 5027 Sahih · in the two Sahihs
- Qur'an 4:80
What the hadith grades mean
- Sahih (authentic): an unbroken chain of trustworthy, precise narrators, free of hidden flaws or contradiction. It is acted upon.
- Hasan (good): like sahih, but a narrator's precision is slightly lighter. It is also accepted and acted upon. "Hasan sahih" means it reaches sahih by its routes.
- Da'if (weak): a break in the chain or a narrator who is not reliable enough. It is not used to establish beliefs or rulings.
- Very weak (munkar, matruk): a seriously flawed chain or a narrator accused of lying. It is not relied on at all.
- Mawdu' (fabricated): falsely attributed to the Prophet ﷺ. It may not be narrated as his words except to warn against it.
- The two Sahihs: every hadith with a full chain in Sahih al-Bukhari and Sahih Muslim is accepted as sahih by the scholars of hadith.
- Historical report: biographies and histories (Ibn Ishaq, Ibn Sa'd, al-Tabari) record events with chains that are often incomplete. They are used for the story, not for rulings.
- Hadith scholars grade a narration; the four madhhabs do not. Where a hadith carries a ruling, the page shows which schools act on it.
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