大方廣佛華嚴經隨疏演義鈔 29.46

29.46

疏「約微細門融三世」者，一中頓具一切諸法，炳然齊現，名微細門。故說一相之中具餘七相，如在母胎即具餘七，今在成正覺相中具餘七相也。故言融三世者，亦即十世隔法異成門，受生是過去，涅槃是未來故。

As for the commentary's statement, "Regarding the subtle and minute gate, fusing the three times": within one [phase], all dharmas are completely endowed all at once, radiantly and simultaneously appearing; this is called the "subtle and minute gate." Therefore, it is said that within one characteristic, the other seven characteristics are fully endowed—just as when in the mother's womb, the other seven are already endowed; here, within the characteristic of attaining correct awakening, the other seven characteristics are fully endowed. Therefore, in saying "fusing the three times," this is also the "gate of separate accomplishment of distinct dharmas across the ten times," because taking birth belongs to the past and nirvāṇa belongs to the future.