Mahavira did not accept any scripture as revealed knowledge.
He made it clear that man is the source of all knowledge.
There is no superior being (paramatma) different from the soul (atma).
It is the atma that on becoming free from the bond of karma becomes the paramatma.
In the philosophy of Mahavira, it is not the scripture but the human being who is considered to be the authority for validation.
The detached (vitarag) human being is the authority and ultimate validation is drawn from the state of perfect detachment (vitarag) of the self.