金光明最勝王經疏 1.8

1.8

又有三緣：一令生欲樂、二令修行、三令斷障。即明眾生欲聞之法莫過三種：一願求勝果并利有情、二所修之行、三所除之障。如《般若經》善現所問，既云「諸有發趣菩薩乘者云何住」等，明知發趣所餘之乘亦有三種。人天乘中雖不斷種，亦能制伏三惡道障，得生人天，故各有三，此由機感。

There are also three conditions: 1. to cause the generation of aspiration and joy; 2. to cause cultivation of practice; 3. to cause the severance of hindrances. That is, clarifying that the teachings sentient beings wish to hear do not exceed three kinds: 1. aspiring to seek superior fruit and benefit sentient beings; 2. practices to be cultivated; 3. hindrances to be eliminated. As in the Prajñāpāramitā Sūtra, Subhūti's question states, 'How should those who set out upon the bodhisattva vehicle abide...', etc., by which we know that setting out upon the remaining vehicles likewise has three kinds. In the vehicle of humans and devas, although one does not sever the seeds, one can also subdue the hindrances to the three miserable destinies and attain rebirth among humans and devas; hence each has three, which is due to the evocation by capacities.