Al-Iḥtijāj or al-iḥtijāj ʿalā ahl al-lajāj (Arabic: الإحتجاج على أهل اللَّجَاج), best known as Al-Iḥtijāj (Arabic: :الإحتجاج) is a secondary book of Hadith written by Abū Manṣūr, Aḥmad b.
ʿAlī b. Abī Ṭālib al-Ṭabrisī (died in 599 AH/1202 CE).
[1][2] Shi'a scholars are certain about its credibility and the only problem of the book is that most of the hadiths (narrations) in it are narrated as al-hadith al-Mursal as there is no chain of transmitters for them in the book.
[3] The book has been published by many publisher across the world: