Hammam’s sermon described the pious Muslims and listed more than a hundred characteristics for them. Many independent translations and interpretations have been written on this sermon. In the meantime, and with more researches, it has become clear that the Al-Muttaqin sermon has been preached in three ways compared to the earlier sources, and they have many discrepancies. Some sources are fundamentally different from the text of Nahj al-Balagha. Considering the importance of the Al-Muttaqin sermon, some doubts exist regarding others and the contents of Nahj al-Balagha; Now, it is necessary to carry out an independent authenticity assessment of this oration from different aspects. For example, check who the speaker or author is. Therefore, we can ask: 1- What are the citations of the Al-Muttaqin sermons in the earlier sources, and what are the differences between them? 2- What conclusion do these documents give us about the main narrator and preacher of the text of the sermon? 3- By examining the text, what evidence is there in front of us to confirm the attribution of its preacher? The present paper deals with the comparative study of Hammam’s (Al-Muttaqin) sermon in the earlier sources up to the seventh century; The results of the paper show that the name of the main narrator is distorted and includes these people: 1- Unknown narrator 2- Ibn Abbas 3- Nouf al-Bekali 4- Sulaym ibn Qays 5- Hassan Basri 6- Ufi bin Delham 7- Ali bin Hossein (PBUH) 8- Imam Sadiq (PBUH) 9- Imam Baqir (PBUH) 10- Dhul-Nun al-Masri. On the other hand, the preacher of the sermon is also indeterminate among these people: 1- Ali (PBUH) 2- Hassan Basri 3- Alam 4- Ibn Abbas 5- Ali bin Hossein (PBUH) 6- Dhul-Nun al-Masri. But according to the textual evidence and Hammam’s tale, it seems that Al-Muttaqin sermon is from the Sufism tradition.