大毘盧遮那成佛經疏 2.86

2.86

第五十七「云何海等心？謂常如是受用自身而住」者，譬如大海，百川歸之，吞納無限。此心亦爾，於一切勝事皆歸之於己，謂嫌餘人無有比者，常自持如是眾多所長，自受用此而住。前心務高，此心務廣，故云與海等同也。行者覺知已，當念三賢十聖等無量大功德海展轉深廣，自剋心行曾未得其塵渧，不應起大慢之心也。

As for the fifty-seventh, “What is the ocean-like mind? It refers to constantly enjoying one's own body in this manner and abiding [therein]”: For example, the great ocean receives the hundred rivers and swallows them without limit. This mind is also like this: it appropriates all superior matters to itself, thinking with contempt that other people have none to compare, and constantly maintains such numerous advantages for itself, enjoying them and abiding [therein]. The previous mind sought height, while this mind seeks breadth; hence it is said to be equal to the ocean. Once practitioners have recognized this, they should reflect that the ocean of immeasurable great merits of the three stages of worthies and ten stages of nobles becomes progressively deep and vast, whereas their own mind and practice have not even attained a speck of dust or a drop of water from it, and they should not give rise to the mind of great pride.