الكتب الأربعة
Shia Muslims regards this book as among the most reliable Hadith collections. Thus, the book is included in The Four Books of the Shia, together with Al-Kafi, Al-Istibsar and Tahdhib al-Ahkam. As with all Hadith collections, however, there is no guarantee of the authenticity of each individual hadith and the reliability of each must be separately assessed.