 The Naiyāyikas address the question of ratification in the context of scriptural injunctions. No knowledge is, according to them, self-justified, and scriptural prescriptions are no exception, but they are also not empirically testable. Vācaspati Miśra suggests that scriptural injunctions can be verified by trading on their similarity with medicinal prescriptions: like medicinal prescriptions, scriptural prescriptions are also acceptable, since both are uttered by an infallible speaker. It is interesting to note in this context that one of the premises of the argument that God is infallible ultimately rests on another accredited belief-generating process, viz., reliable testimony or authority. And again, when the authority as a means of valid cognition is questioned, there is a fall back on inference. Many a times we see the Naiyāyikas paying scant attention to obviously circular reasoning. This cannot be due to their inadvertence or ignorance. Rather, like true naturalists, they favour repairing their boat while still floating. And significantly, at no stage in their rebuttal of scepticism do they resort to an internalist mode of justification.