CC Ādi 8.32
tāṅre nā bhajile kabhu nā haya nistāra
Śrī Caitanya Mahāprabhu, the independent Supreme Personality of Godhead, is greatly magnanimous. Unless one worships Him, one can never be liberated.
Śrī Bhaktisiddhānta Sarasvatī Ṭhākura here remarks that one should not give up the worship of Rādhā-Kṛṣṇa to worship Śrī Caitanya Mahāprabhu. By worshiping either Rādhā-Kṛṣṇa or Lord Caitanya alone, one cannot become advanced. One should not try to supersede the instructions of the six Gosvāmīs, for they are ācāryas and very dear to Lord Caitanya. Therefore Narottama dāsa Ṭhākura sings:
kabe hāma bujhaba se yugala-pirīti
One must be a submissive student of the six Gosvāmīs, from Śrīla Rūpa Gosvāmī to Raghunātha dāsa Gosvāmī. Not following their instructions but imagining how to worship Gaurasundara and Rādhā-Kṛṣṇa is a great offense, as a result of which one clears a path to hell. If one neglects the instructions of the six Gosvāmīs and yet becomes a so-called devotee of Rādhā-Kṛṣṇa, he merely criticizes the real devotees of Rādhā-Kṛṣṇa. As a result of speculation, he considers Gaurasundara to be an ordinary devotee and therefore cannot make progress in serving the Supreme Personality of Godhead, Rādhā-Kṛṣṇa.