3. [3/30] al-Kafi: Ali b. Ibrahim from his father from Ibn Abi Umayr from Abdallah b. Sinan from Abi Abdillah عليه السلام who said
the messenger of Allāh صلى الله عليه وآله said: Allāh Mighty and Majestic says: discussion of knowledge between my slaves is among that which enlivens the dead hearts if it leads them (to submit) to my command.