yadi hi vedasyā{sya---}nityatā sambhavet tadaivaṃ syād vaktum yā ca vedasya nityateti, yāvatā saiva na siddhyet
If indeed the eternality of this Veda were possible, only then could one say "[both] the eternality of the Veda [and Buddha's omniscience are equal]"; however, that very [eternality] is not established