CC Ādi 3.43
ন্যগ্রোধপরিমণ্ডল-তনু চৈতন্য গুণধাম ॥ ৪৩ ॥
nyagrodha-parimaṇḍala-tanu caitanya guṇa-dhāma
Such a person is called nyagrodha-parimaṇḍala. Śrī Caitanya Mahāprabhu, who personifies all good qualities, has the body of a nyagrodha-parimaṇḍala.
No one other than the Supreme Lord Himself, who has engaged the conditioned souls by His own illusory energy, can possess these bodily features. These features certainly indicate an incarnation of Viṣṇu and no one else.