The Lord then presented Himself as a most fallen living entity, and He said, "If someone accepts a fallen conditioned soul as Visnu, Bhagavan, or an incarnation, he commits a great offense"

Expressions researched:
"The Lord then presented Himself as a most fallen living entity, and He said, “If someone accepts a fallen conditioned soul as Viṣṇu, Bhagavān, or an incarnation, he commits a great offense"

Sri Caitanya-caritamrta

CC Madhya-lila

When Prakāśānanda Sarasvatī supported himself by quoting the verse from Śrīmad-Bhāgavatam, Śrī Caitanya Mahāprabhu immediately protested by uttering the holy name of Lord Viṣṇu. The Lord then presented Himself as a most fallen living entity, and He said, “If someone accepts a fallen conditioned soul as Viṣṇu, Bhagavān, or an incarnation, he commits a great offense.”

CC Madhya 25.78, Translation and Purport

When Prakāśānanda Sarasvatī supported himself by quoting the verse from Śrīmad-Bhāgavatam, Śrī Caitanya Mahāprabhu immediately protested by uttering the holy name of Lord Viṣṇu. The Lord then presented Himself as a most fallen living entity, and He said, “If someone accepts a fallen conditioned soul as Viṣṇu, Bhagavān, or an incarnation, he commits a great offense.”

Although Śrī Caitanya Mahāprabhu was Viṣṇu, the Supreme Personality of Godhead, to teach us a lesson He nonetheless denied belonging to the Viṣṇu category. Unfortunately, there are many so-called Viṣṇu incarnations in this Age of Kali. People do not know that posing oneself as an incarnation is most offensive. People should not accept an ordinary man as an incarnation of God, for this also is a very great offense.