So, what documents are those? One of them has been identified as a Christian missionary guide developed in Damascus for use by missionaries to Mecca.
Other items are undoubtedly torahs buried, and found in and around Mecca ~ quite possibly in the "cave" where Mohammad is supposed to have met an angel.
This fellow is certainly not the first to discuss Mo's epileptic seizures. During those times that would not even be a negative since epilepsy was considered a affliction from God.