瑜伽論記 20.67

20.67

泰云：如二朋友，共度沙路無水之處，一人得小水，即便飲盡，以自之尿將與彼人，故名飲尿友。假子者，如世間養子非親生也。外現親善，內懷諂曲，空費家財，更須勘問。

Tai says: It is like two friends who cross a desert path without water together; one obtains a little water and immediately drinks it all, and offers his own urine to the other person; hence he is called a friend who drinks urine. An 'adopted son' is like an adopted child in the worldly realm who is not one's own biological offspring. Externally appearing intimate and good, inwardly harbouring deceit and flattery, and vainly squandering the family property; this still requires further investigation.