Anirvachaniyam

That which is not present always, in all 3 periods of time, how can that be sat. As we transact in the waking state, we can see how the waking state is present only transactionally, its constantly changing, and there is not object which stays unchanged in all 3 periods of time. And in fact , when we analyse using the shruti, quite clearly this reality resolves in atma the absolute, existence. So that which can be negated, how can that be sat.

So our transactional reality is mithya only, it cannot be sat, it is not totally non existent also, not asat. Hence it is sat asat, anirvachaniyam.