大般涅槃經集解 21.37

21.37

案僧亮曰：答問云何共聖行至太白與彗星也。上說文字，此顯文之所表六行。經體具足，法理不偏，六行常俱，以鳥為譬也。法瑤曰：滿字者，即是常義。半字者，即無常義。常以無常雖殊，其理致是同。昔說無常，為令得常。得常由乎無常，豈得相離？是則共成一聖，名為共聖行也。僧宗曰：大分此品為三段，第一則六行體、第二寄因以明六行也、第三就相行以明六也。寶亮曰：此下兩品，同廣文字下旨，謂常無常六行也。〈鳥喻品〉雙明六行，〈月喻品〉偏明三行，然俱廣明理，故共答一問也。此品總別有二門：第一從品初以下，總門也；第二從「如來已離憂悲」訖品，別門也。智秀曰：此品分為二段。第一從初訖「復異豆粟甘蔗」，略列六行也。第二從「如是諸種」訖品，廣明六行也。廣中別有章門，至彼更開。

Sengliang comments: Answering the question from "how does one share in the holy practice" up to "Venus and comets." Above explained the written characters; here reveals the six practices expressed by the text. The body of the sūtra is complete and its dharmic principle is unbiased; the six practices are constantly conjoined, using birds as a metaphor. Fayao says: Complete letters signify the meaning of permanence. Half-letters signify the meaning of impermanence. Although permanence and impermanence differ, their underlying principle is identical. Formerly explaining impermanence was to cause one to attain permanence. Attaining permanence depends on impermanence—how could they be separated? Thus together they accomplish a single sage; this is called "sharing in the holy practice." Sengzong says: Broadly divided, this chapter has three sections: first, the substance of the six practices; second, relying on causes to clarify the six practices; third, clarifying the six [practices] in terms of phenomenal practice. Baoliang says: The two chapters below together expand upon the purport underlying the written characters, namely the six practices of permanence and impermanence. The "Simile of the Birds Chapter" clarifies the six practices jointly, while the "Simile of the Moon Chapter" particularly clarifies three practices; yet both broadly clarify the principle, hence jointly answering a single question. This chapter has two gates, general and particular: first, from the beginning of the chapter downward is the general gate; second, from "The Tathāgata has already left sorrow and grief behind" to the end of the chapter is the particular gate. Zhixiu says: This chapter is divided into two sections. First, from the beginning up to "further differing from beans, millet, and sugar cane," briefly lists the six practices. Second, from "Such various seeds" to the end of the chapter broadly clarifies the six practices. Within the broad explanation there are particular headings, which will be further laid out when reaching them.