瑜伽論記 19.66

19.66

四十二明生死似海。不可飲相似者，如世海鹹陸人不飲，如是生死大海賢聖不飲。大寶所依者，如世間海多有貴珍，如是生死大海有佛性法爾無漏種子大寶。

Forty-second, explaining that saṃsāra is like an ocean. 'Similar in being undrinkable': just as the salty water of the worldly sea is not drunk by people on land, so too the great ocean of saṃsāra is not drunk by worthy and noble ones. 'The support of great treasures': just as the worldly ocean contains many precious treasures, so too the great ocean of saṃsāra contains the great treasure of naturally pure taintless seeds of Buddha-nature.