摩訶止觀 5.124

5.124

若法性、無明合，有一切法陰界入等，即是俗諦；一切界入是一法界，即是真諦；非一非一切，即是中道第一義諦。如是遍歷一切法，無非不思議三諦（云云）。若一法一切法，即是因緣所生法，是為假名，假觀也；若一切法即一法，我說即是空，空觀也；若非一非一切者，即是中道觀。

If dharmatā and avidyā combine and there are all phenomena such as aggregates, realms, and sense-bases, this is the conventional truth; that all realms and sense-bases are the single dharmadhātu is the true truth; that they are neither one nor all is the middle way ultimate truth. Thus traversing all phenomena without exception, there is none that is not the inconceivable three truths (and so on). If one phenomenon is all phenomena, this is the phenomenon produced by causes and conditions; this is provisional designation, the contemplation of provisionality. If all phenomena are the single phenomenon, I declare it to be emptiness, the contemplation of emptiness. If it is neither one nor all, this is the contemplation of the middle way.