pañca-tattva lañā karena saṅkīrtana raṅge
pañca-tattva-these five tattvas; avatīrṇa-advented; caitanyera-with Caitanya Mahāprabhu; saṅge-in company with; pañca-tattva-the same five subjects; lañā-taking with Himself; karena-He does; saṅkīrtana-the saṅkīrtana movement; raṅge-in great pleasure.
These five tattvas incarnate with Lord Caitanya Mahāprabhu, and thus the Lord executes His saṅkīrtana movement with great pleasure.
Taking advantage of Śrī Caitanya Mahāprabhu, many unscrupulous devotees manufacture a mahā-mantra of their own. Sometimes they sing, bhaja nitāi gaura rādhe śyāma hare kṛṣṇa hare rāma or śrī-kṛṣṇa-caitanya prabhu-nityānanda hare kṛṣṇa hare rāma śrī-rādhe govinda. Actually, however, one should chant the names of the full Pañca-tattva (śrī-kṛṣṇa-caitanya prabhu-nityānanda śrī-advaita gadādhara śrīvāsādi-gaura-bhakta-vṛnda) and then the sixteen words Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare, but these unscrupulous, less intelligent men confuse the entire process. Of course, since they are also devotees they can express their feelings in that way, but the method prescribed by Śrī Caitanya Mahāprabhu's pure devotees is to chant first the full Pañca-tattva mantra and then chant the mahā-mantra-Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare.