The most important Hadeeth which contains an obligatory and compulsory order from the Prophet to every Muslims from His time till the day of Judgement is Hadeeth Al-Thaqalain in which the Prophet stated (I am leaving among you two most important things that if you keep follow both of them, you will never go astray; the book of Allah and my progeny Ahlulbayt (AS). This most authentic Hadeeth was narrated both in Shia and Sunni books. These are some of the Sunni books:
1. Saheeh Muslim, Volume 7, Page 123
2.Al-Sunan Al-Khubra by Al-Bayhaqi, Volume 2, Page 138 and Volume 7, Page 30
3. Al-Sunan Al-Khubra by Al-Nasa’ee, Volume 5, Page 51
4. Shaheeh Ibn Khuzaima, Volume 4, Page 63
5. Al-Mo’jam Al-Kabeer by Al-Tabrani, Volume 5, Page 182
6. Musnad Ahmad Ibn Hambal, Volume 4, Page 366
7. Sunan Al-Darreme, Volume 2, Page 431
8. Al-Mussannaf by Ibn Abi Shaibah, Volume 7, Page 418 and many other Sunni books.
The main reason of the problems of the Muslims after Prophet till today is the disobedience of the majority of the Muslims and deviating from the clear orders of the Prophet stated in this Hadeeth. They claim to read Quran, but they left Ahlulbayt
(AS) aside and followed other people. The solution of all the problem of Muslims is in obeying Allah by obeying his Messenger, by implementing his orders in this Hadeeth. When Muslims obey Allah, the Prophet (SAWA) and Ahlulbayt (AS) then they will be on the right path.
Wassalaam
