瑜伽論記 2.452

2.452

三攝受中，欲解則前可信、可妄，決定意樂故，二、保任則應建立可妄信故；三、作用則無有虛誑則起實語之作用也。

Under the three kinds of appropriation: 'zeal' refers to the aforementioned being trustworthy and [incapable of] deception, because of a resolved intention; second, 'guarantee' refers to being worthy of being established and trusted without deceit; third, 'function' refers to being free from deceit, which is the function of speaking truth.