妙法蓮華經玄義 9.160

9.160

住本顯本，此就佛本意。即如下方菩薩於空中住，法身佛為法身菩薩說法，法身修道，純說一乘。文云：「娑婆世界純以黃金為地，人天充滿。」又云：「人眾見燒盡，我淨土不毀。」能如是深觀，是為深信解相，常住此本，恒顯於本。文云：「我成佛已來，甚大久遠，壽命無量阿僧祇劫，常住不滅。」豈非住本顯本也？

Abiding in the original source and revealing the original source: this is in terms of the Buddha's original intention. It is just like the bodhisattvas from below abiding in space, the dharma-kāya Buddha expounding the Dharma for dharma-kāya bodhisattvas, cultivating the path with the dharma-kāya, purely expounding the eka-yāna. The text says: "The sahā world has ground purely of yellow gold, filled with humans and devas." It also says: "When the multitude sees it burned up, my pure land is indestructible." To be able to contemplate deeply in this way is the mark of deep faith and understanding; constantly abiding in this original source, one eternally reveals the original source. The text says: "Since I attained Buddhahood, it has been extremely long, my lifespan has been immeasurable asaṃkhyeya kalpas, constantly abiding and never extinguished." Is this not abiding in the original source and revealing the original source?