大方廣佛華嚴經隨疏演義鈔 18.87

18.87

疏「四幻化身安坐水月道場」者，《涅槃》云「吾今此身是幻身矣。則所得道之處，如水中月。」故昔人云：修習空華萬行，安坐水月道場，降伏鏡像天魔，證成夢中佛果。意云：若因若果皆從緣生，如幻夢故。二引。疏「若正約威勢」下，別辯十身之一坐六類道場，但自狹之寬。威勢既通變化，他受用身故，約諸剎漸寬周遍法界，乃至重重。

Regarding the commentary’s "Fourth, the illusory transformation body serenely sits in the water-moon bodhimaṇḍa": the *Nirvāṇa-sūtra* says: "This body of mine at present is an illusory body. Thus the place where the Way is attained is like the moon in the water." Therefore, ancients said: "Cultivating the sky-flower myriad practices, serenely sitting in the water-moon bodhimaṇḍa, subduing the mirror-image heavenly māras, and realizing the dream-like fruit of Buddhahood." The meaning is: causes and fruits alike arise from conditions, because they are like illusions and dreams. Second, citation. On the commentary’s "If properly in terms of majesty..." downward: it specifically distinguishes how one of the ten bodies sits in six classes of bodhimaṇḍas, simply moving from the narrow to the broad. Since majesty applies to transformation and to the body of enjoyment for others, it is in terms of the various lands gradually expanding and pervasively filling the dharmadhātu, and even layer upon layer.