Abbas Di Palma, Shaykh Abbas Di Palma holds a BA and an MA degree in Islamic Studies, and certifications from the Language Institute of Damascus University. He has also studied traditional Islamic sciences in... Answer updated 1 year ago

as salam alaikum 

there is no certainity that single narrations (khabar al-wahid) from al-Kafi, with no external evidence to claim their origin (maqtu'iyyah al-sudur), are in fact from the Imams. Rather what Usuli scholars have said is that we can act according to its authentic narrations (al-sahih minhu), when proofs for it have been established.

There are several criterions to establish what has been said by the Imams but we consider no book of hadith 100% sound under all aspects and all narrations should be subject to rigid scrutiny.

With prayers for your success. 

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