大方廣圓覺修多羅了義經略疏 1.104

1.104

五、圓教者，明一位即一切位、一切位即一位，是故十信滿心即攝五位成正覺等，主伴具足故名圓教，即《華嚴經》也。所說唯是無盡法界，性海圓融緣起無礙，如帝網珠重重無盡。已知五教貫於群詮，未審此經與彼何攝？今顯此義，分作三門：一、彼全攝此，此分攝彼，謂圓教也；二、此分攝彼，彼不攝此，謂初、二也；三、彼此克體全相攝屬，即終頓也。

Fifth, regarding the complete teaching: it clarifies that one stage is directly all stages, and all stages are directly one stage; therefore, the fulfillment of the mind in the ten faiths directly encompasses the five stages and accomplishes correct enlightenment, and so forth. Because host and companion are completely fulfilled, it is named the complete teaching—that is, the Huayan Sūtra. What it expounds is exclusively the inexhaustible dharmadhātu, wherein the ocean of nature is completely fused and pratītyasamutpāda is unimpeded, like the inexhaustible layers of the jewels in Indra's net. Having understood that the five teachings run through all expositions, it is not yet known how this sūtra and those [teachings] encompass each other. Now, to reveal this meaning, it is divided into three sections: 1. That fully encompasses this, while this partially encompasses that—meaning the complete teaching; 2. This partially encompasses that, while that does not encompass this—meaning the first and second [teachings]; 3. Each strictly encompasses the other in essence—meaning the final and sudden [teachings].