金光明最勝王經疏 2.171

2.171

贊曰：能為勝因能生果報者為十王因，成辦菩提為三身因。真勝果報，意令彼求。

Commentary: That it can serve as a superior cause and can generate retribution is the cause for [becoming] the ten kings; accomplishing bodhi is the cause for the three bodies. These are the true and superior fruits of retribution, which it intends for him to seek.