It is narrated that Imam al-Sadiq (a.

It is narrated that Imam al-Sadiq (a.s.) said: "Never is there anything but that is mentioned either in the Book of Allah or in the Prophetic tradition."(39) Sama'ah asked Imam Musa bin Ja'far: "I said to him: 'Is everything found in the Book of Allah and the tradition of His Prophet (s.a.w.); or do you comment on them?' He (a.s.) replied: 'Yes, all things are found in the Book of Allah and the sunnah of His Prophet '".(40) Narrated Imam Ali bin Musa al-Ridha (a.s.) said: "Do not accept any saying (relating them to us) which disagrees with the Qur'an; surely our sayings should agree with the Qur'an and the Prophetic traditions; we speak either quoting them from Allah or His Messenger."(41) It is narrated that Imam Ja'far al-Sadiq (a.s.) said: "Do not accept any narrative related to us unless they agree with the Qur'an and the sunnah."(42) Indeed the Imams of Ahlul-Bait memorized the Prophetic traditions quoting them from their fathers who quote them from the Messenger of Allah (s.a.w.) and called people to write them down from the period (of rule) of Ali and his son Hasan (a.s.) while the caliphs forbid the writing down of the sunnah and they continued so till the period of Umar bin Abdul-Aziz(43) who ordered, again, to write down the Prophetic traditions in the year of 99 A.H.(44) Imam al-Sadiq (a.s.) said: "My narration is my father's, and my father's is my grandfather's, and my grandfather's is his father's, and his; father's is the narrative of Ali bin Abi Talib, and the narrative of Ali is the narrative of the Messenger of Allah (s.a.w.), and the narrative of the Messenger of Allah (s.a.w.), is the words of Allah.

the Exalted."(45) The Imams of Ahlul-Bait were those who comprehended and understood the sunnah of the Messenger of Allah, memorized, narrated them to others, and explained their contents to the Muslim nation. Scholarly Methods for Proving the true Sunnah: In order to distinguish the true narratives (sunnah) from the interpolated and false ones, the scholars of the school of Ahlul-Bait placed some scholarly and ideological bases and measures for proving true sunnah.

The most prominant of them are: Any hadith (the Prophet's sayings) should be checked with the Book of Allah to see whether it is correct or not. If it conforms with the Qur'an, then, it is of true hadith, but, if it contradicts the divine text, then it is a false one. 2.