大方廣佛華嚴經疏 49.38

49.38

第三大海潛益喻，喻佛體均益生智，即雙釋前依及出生義。謂與眾生心同體，故義曰潛流。穿鑿自心得智慧時，即是見他佛智，是曰依之出生。又由體同，令外佛加持資其念力，亦是流入。

Third is the simile of the great ocean secretly benefiting, which illustrates the Buddha's wisdom of benefiting beings with an equal essence; this doubly explains the prior meanings of 'support' and 'producing'. That is to say, because it is of the same essence as the minds of sentient beings, the principle is called 'secretly flowing'. When, by boring and digging into one's own mind, one attains wisdom, that is seeing the wisdom of the other Buddha; this is called being produced based upon it. Furthermore, because the essence is identical, the external Buddha's empowerment augments one's power of mindfulness; this too is an 'inflowing'.