الكافي- ط الاسلامية, volume 1, page 69

1. Ali ibn Ibrahim has narrated from his father from al-Nawfali from al-Sakuni from abu ‘Abdallah (a.s.) who has said the following. “The holy Prophet (s.a.), “Over every truth there is a reality and above every valid issue there is light. Whatever agrees with the holy Quran you must follow it and whatever does not agree disregard it.”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

2. Muhammad ibn Yahya has narrated from ‘Abdallah ibn Muhammad from Ali ibn al-Hakam from Aban ibn ‘Uthman from ’Abdallah ibn Abu Ya‘fur and al-Husayn ibn al-'Ala' who was also present at the gathering with Ibn Abi Ya‘fur (Abu Ya'fur narrates the following): "I asked Abu ‘Abdallah (a.s.) about the differences in Hadith which is narrated from people whom we trust and yet from other people we do not trust. The Imam replied, 'If you come across a Hadith and you find evidence in the holy Quran to support it or in the Hadith of the holy Prophet (you may follow it), otherwise, the one who has come to you with it is more deserving of it.'"

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

3. A number of our people has narrated from Ahmad ibn Muhammad ibn Khalid from his father from al-Nadr ibn Suwayd from Yahya al-Halab from Ayyub ibn al-Hurr who has said the following. “Abu ‘Abdallah (a.s.) has said, ‘Everything must be referred back to the Book of Allah and the Sunnah, and any hadith that does not agree with the Book of Allah is a worthless embelishment.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from ibn Faddal from Ali ibn ‘Uqba from Ayyub ibn Rashid from abu ‘Abdallah (a.s.) who has said the following. “Of Hadith whatever does not agree with the holy Quran is a useless statement.”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

5. Muhammad ibn ’Isma‘il from al-Fadl ibn Shadhan from Ibn Abi ‘Umayr from Hisham ibn al-Hakam and others from abu ‘Abdallah (a.s.) who has said the following. “The holy Prophet once addressed the people in Mina (a place in Makkah) saying, “O people, whatever comes to you in the form of my Hadith you must see if it agrees with the holy book of Allah then know that I have said it but whatever comes to you that does not agree with the book of Allah then know that I have not said it.”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.