妙法蓮華經玄義 7.61

7.61

Second, clarifying the subtlety of the original fruition: the round and subtle cause originally practiced tallied with the ultimate permanence, bliss, self, and purity—this is the original fruition. It does not take Vairocana's attainment of buddhahood at the seat of quiet extinction as the original fruition. It does not even take the intermediate fruition as the original fruition; how could Vairocana's initial attainment be the original source? It only takes the fruition first realized since attaining buddhahood in the extremely distant past, which is named the subtlety of the original fruition.