妙法蓮華經玄贊 2.298

2.298

贊曰：第四能進入因。論云：「彼諸王子得大菩提故，供養者修財、法行，諸佛者所遇良緣，要遇良緣深修妙行方成佛故。」

The commentary states: The fourth is the cause of being able to progress. The treatise says: "Because those princes attained great bodhi; those who made offerings cultivated the practice of wealth and Dharma; and the buddhas were the auspicious conditions they met—only by meeting auspicious conditions and deeply cultivating wondrous practice do they attain buddhahood."