大般涅槃經義記 4.98

4.98

〈四諦〉至此大段第二明其捨相入證之行，自下第三明其證實成果之行，亦名證實起用之行。於此分中具答四問：一答云何共聖行如娑羅娑鳥及迦陵提、二答如日、三答如月、四答如星。答此四問明佛果德，德體難彰，寄用顯示。用謂三業，答初一問明佛意業起化作用，答後三問明佛身、口起化作用。

From the "Four Truths" [Chapter] up to this point is the second major section, clarifying the practice of relinquishing marks and entering realization. From here below is the third [major section], clarifying the practice of realizing the real to accomplish the fruition, also called the practice of realizing the real and giving rise to function. Within this part, it fully answers four questions: first, it answers how one travels together with the noble ones like the sārasa bird and the kālindī; second, it answers [the simile of being] like the sun; third, it answers [the simile of being] like the moon; fourth, it answers [the simile of being] like the stars. Answering these four questions clarifies the fruitional virtues of the Buddha. The essence of these virtues is difficult to manifest, so it is revealed by relying on their functions. 'Functions' refers to the three karmas: answering the first question clarifies the transformative function arising from the Buddha's mental karma; answering the latter three questions clarifies the transformative function arising from the Buddha's physical and verbal karmas.