Purport to Pancha-tattva maha-mantra by His Divine Grace A. C. Bhaktivedanta Swami Prabhupada

(jaya) sri-krishna-caitanya prabhu nityananda
sri-advaita gadadhara srivasadi-gaura-bhakta-vrinda

Sri Caitanya Mahaprabhu is always accompanied by his plenary expansion Sri Nityananda Prabhu, his incarnation Sri Advaita Prabhu, his internal potency Sri Gadadhara Prabhu, and his marginal potency Srivasa Prabhu. He is in the midst of them as the Supreme Personality of Godhead. One should know that Sri Caitanya Mahaprabhu is always accompanied by these other tattvas. Therefore our obeisances to Sri Caitanya Mahaprabhu are complete when we say, sri-krishna-caitanya prabhu nityananda sri-advaita gadadhara srivasadi-gaura-bhakta-vrinda. As preachers of the Krishna consciousness movement, we first offer our obeisances to Sri Caitanya Mahaprabhu by chanting this Pancha-tattva mantra; then we say, Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare. There are ten offenses in the chanting of the Hare Krishna maha-mantra, but these are not considered in the chanting of the Pancha-tattva mantra, namely, sri-krishna-caitanya prabhu nityananda sri-advaita gadadhara srivasadi-gaura-bhakta-vrinda. Sri Caitanya Mahaprabhu is known as maha-vadanyavatara, the most magnanimous incarnation, for he does not consider the offenses of the fallen souls. Thus to derive the full benefit of the chanting of the maha-mantra (Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare), we must first take shelter of Sri Caitanya Mahaprabhu, learn the Pancha-tattva mantra, and then chant the Hare Krishna maha-mantra. That will be very effective.