維摩經玄疏 5.145

5.145

Ninth, analogously correlating the three jewels of a single substance: the liberation of the true nature is the Dharma jewel; the liberation of real wisdom is the Buddha jewel; hence the Nirvāṇa Sūtra states: 'That which the Buddhas take as teacher is what is called the Dharma. Because the Dharma is eternal, the Buddhas are also eternal.' The liberation of expedient means is the Saṅgha jewel; internally harmonious in response-body, externally harmonizing with the ten dharma-realms and all sentient beings, it is also able to lead all to enter the great ocean of harmony; possessing the three harmonies, this is the true Saṅgha.