大般涅槃經疏 28.15

28.15

「善男子我經中」下，第五爭論，明佛身有為無為。薩婆多說有為；僧祇說無為；《成論》兩說，絕言故無為、寄言故有為，應身有為、真身無為。文中先明有為、次明無為。

From “Good son, in my sūtras…” below, the fifth dispute clarifies whether the Buddha's body is conditioned (saṃskṛta) or unconditioned (asaṃskṛta). The Sarvāstivāda says it is conditioned; the Mahāsāṃghika says it is unconditioned; the *Tattvasiddhi* presents both views: transcending speech it is unconditioned, while relying on speech it is conditioned; the transformation body is conditioned, while the true body is unconditioned. In the text, it first clarifies conditioned, and next clarifies unconditioned.