Professor Ansarian:
There are four original sourced we can refer to so as to achieve the noble teachings of Islam:
The first source is the Holy Quran.
The second source is the Nahj al-Balagh (the peak of the eloquence), from the first sermon to the last aphorisms is a complete procedures of the true facts of Islam
Sahifeh Sajjadiyah is the third source which contains more than fifty prayers, supplications and meditations that any of these prayers along with intimacy and deep spiritual relationship with the Lord of the universe have teachings and truths of divine sacred rites.
The fourth source is the honorable, correct and authentic book of Usool Kafi and the Ulema, scholars and the true servants of Allah trust the author of this book.
source : erfan.ir
