The teachings of the Prophet ﷺ remain available today.
A central distinction of his mission is that the religious law and teachings he brought remain accessible and can be followed.
Preservation of the teachings means that the rules of religion can still be understood and acted upon. Where a claimant’s basic guidance is absent, a valid claim to follow that instruction cannot be established in the same manner.
For Muslims, the Prophet’s teachings remain the authoritative and continuing source of religious guidance.