عنوان مقاله [English]
نویسنده [English]چکیده [English]
The question of the necessary and sufficient level of knowledge is an important issue in the field of religious beliefs. The question is whether reaching to certainty is necessary in this field and only the knowledge-bearing sources are valid; or conjecture is sufficient too, therefore the conjectural and devotional proofs, especially Khabar al-Wahid (singular hadith) are considered as valid proofs. Sheikh Muhammad Al-Sanad considers that belief is a heartly act and it is possible to apply the Shari'a authority on it. However, the outcome of this research admits the impossibility of serving according to conjecture in beliefs, while it is possible to observe some precautions in the practical necessities of some Hadiths on beliefs.