大方廣佛華嚴經疏 20.23

20.23

八願中亦有十願，前五後三盡字為初，六身恒住盡劫海，七智盡心海，八窮盡有支，九盡現國土，十窮佛果智。此求菩提，前九利樂。若依三願，二三四五為自行願，六七為神通，初及八九為外化，十通二利。皆云盡者，窮彼源故。

In the eighth, vows, there are also ten vows: the first five and the last three have the word 'exhausting' at the beginning; six, the body constantly dwelling, exhausting the sea of kalpas; seven, wisdom exhausting the sea of minds; eight, thoroughly exhausting the branches of existence; nine, exhaustively manifesting buddha-lands; ten, thoroughly exhausting the wisdom of the Buddha's fruit. This seeks bodhi; the former nine are benefit and bliss. If based on the three vows: two, three, four, and five are vows for one's own practice; six and seven are for spiritual superknowledges; the first and eight and nine are for external transformation; ten extends to both benefits. That all say 'exhausting' is because of thoroughly reaching their source.