妙法蓮華經玄義 4.169

4.169

十、佛地者，大功德力資智慧、一念相應慧，觀真諦究竟，習亦究竟。如劫火燒木，無復炭灰。如象渡河，到於邊底。雖菩薩、佛名異二乘，通俱觀無生體法，同是無學，得二涅槃，共歸灰斷，證果處一，故稱為通也。

10. The stage of the Buddha: the power of great merit assists wisdom—the wisdom corresponding to a single thought—contemplating the real truth completely, and residual propensities are also completely [severed]. It is like the fire at the end of a kalpa consuming wood until no charcoal or ash remains, or like an elephant crossing a river and reaching the bottom and the other shore. Although the names "bodhisattva" and "buddha" differ from those of the two vehicles, [all three] generally contemplate unproduced phenomena together, are equally beyond study, attain the two nirvāṇas, jointly return to ashes and extinction, and the place where they realize the fruit is one; hence it is called "shared."