The Commentary of verse 88 of Chapter 28 the Narrative [al-Qasas] Everything is perishable but He.

6. Ahmad ibn Muhammad ibn Yahya al-`Attar, may Allah have mercy on him, on the authority of his father on the authority of Sahl ibn Ziyad on the authority of Ya`qub ibn Yazid on the authority of Muhammad ibn Sinan on the authority Abu Sallam on the authority of some of our scholars that Abu Ja`far al-Baqir عليه السلام said: We are the Oft-Repeated1 Ones that Allah bestowed to our Prophet صلى الله عليه وعلى آله وسلم. We are the Face [wajh] of Allah. And (wih all this) we live among you. Whoever recognizes us, and whoever is ignorant of us faces certain death [yaqin]. The Compiler of this book, may Allah be pleased with him, says: The meaning of his عليه السلام statement: “We are the oft-repeated” is that we are the ones that the Prophet صلى الله عليه وعلى آله وسلم joined with the Qur`an, and made a will to remain attached to the Qur`an and to us. Hence, he صلى الله عليه وعلى آله وسلم informed his Ummah that we will not separate from each other, until we meet him at the Pool (of Kawthar in Paradise).