淨名經集解關中疏 2.537

2.537

如是天帝。當知此要。以法供養於諸供養為上。為最第一無比是故天帝。當以法之供養供養於佛　四結勸。肇曰。吾成正覺由法供養。以是可智法養為上。

"In this way, Lord of the gods, you should know this essential point: among all offerings, the offering of Dharma is the highest, the foremost, supreme and peerless. Therefore, Lord of the gods, you should make offerings to the Buddha with the offering of Dharma." / Fourth, concluding exhortation. Sengzhao says: "My attainment of perfect enlightenment was due to the offering of Dharma. From this, one may know that the offering of Dharma is supreme."