妙法蓮華經玄義 5.48

5.48

從初住已上，總論功用；若豎功未深，橫用不廣；豎功若深，橫用必廣。譬如諸樹，根深則枝闊，華葉亦多。初住豎破一分無明，獲一分二十五三昧，顯一分我性。論其實處，不可思議，依於教門。橫則百佛世界，分身散影，作十法界像，利祐眾生。如是住住豎入，倍倍轉深，無明漸漸盡、三昧轉轉增，我性分分顯、橫用稍稍廣。千佛界、萬佛界、恒沙佛界、不可說不可說佛界，遍如是界，八相成道，教化眾生，況餘九法界身耶？諸行、諸地，亦復如是。論其滿足，唯佛與佛，乃能究盡無明之源。故經言：「如佛心中無無明，唯佛法王住究竟王三昧。毘盧遮那法身，橫周法界，豎極菩提，大功圓滿，勝用具足」（云云）。

From the first abidance upward, function is discussed in general terms: if the vertical effort is not yet deep, the horizontal function is not wide; if the vertical effort is deep, the horizontal function must be wide. This is just like trees: when the roots are deep, the branches are broad, and flowers and leaves are also abundant. At the first abidance, one vertically shatters one portion of fundamental ignorance, acquires one portion of the twenty-five samādhis, and reveals one portion of the nature of the self. In terms of its real place, it is inconceivable, yet according to the doctrinal gateway, horizontally one multiplies bodies and casts reflections across a hundred buddha worlds, manifesting the images of the ten dharma realms to benefit and bless sentient beings. Vertically entering stage by stage in this way, it progressively deepens twofold: fundamental ignorance gradually comes to an end, samādhis continuously increase, the nature of the self is revealed portion by portion, and the horizontal function gradually widens. Across a thousand buddha worlds, ten thousand buddha worlds, Ganges-sands of buddha worlds, and inexpressible-inexpressible numbers of buddha worlds—pervading such worlds, one accomplishes the way through the eight phases and teaches and transforms sentient beings, to say nothing of bodily forms in the remaining nine dharma realms! The various practices and the various stages are also like this. In terms of its complete fulfillment, only a buddha together with a buddha can thoroughly fathom the source of fundamental ignorance. Therefore the sūtra says: "Just as there is no fundamental ignorance within the mind of a buddha, only a buddha, the Dharma King, abides in the sovereign samādhi of ultimate completion. The dharma-kāya of Vairocana horizontally encompasses the dharma realm and vertically reaches the culmination of bodhi, with great effort fully perfected and superior function completely endowed" (and so forth).