garbha-saá¹…kará¹£aṇÄt taá¹ vai
prÄhuḥ saá¹…kará¹£aṇaá¹ bhuvi
rÄmeti loka-ramaṇÄd
balabhadraá¹ balocchrayÄt
garbha-saá¹…kará¹£aṇÄt - because He will be taken from the womb of DevakÄ« to that of Rohiṇī; tam - Him (Rohiṇī-nandana, the son of Rohiṇī); vai - indeed; prÄhuḥ - people will call; saá¹…kará¹£aṇam - by the name Saá¹…kará¹£aṇa; bhuvi - in the world; rÄma iti - He will also be called RÄma; loka-ramaṇÄt - because of His special mercy in enabling people in general to become devotees; balabhadram - He will also be called Balabhadra; bala-ucchrayÄt - because of extensive bodily strength.
These are some of the reasons why BalarÄma is known as Saá¹…kará¹£aṇa, BalarÄma or sometimes RÄma. In the mahÄ-mantra — Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare RÄma, Hare RÄma, RÄma RÄma, Hare Hare — people sometimes object when RÄma is accepted as BalarÄma. But although devotees of Lord RÄma may object, they should know that there is no difference between BalarÄma and Lord RÄma. Here ÅšrÄ«mad-BhÄgavatam clearly states that BalarÄma is also known as RÄma (rÄmeti). Therefore, it is not artificial for us to speak of Lord BalarÄma as Lord RÄma. Jayadeva GosvÄmÄ« also speaks of three RÄmas: ParaÅ›urÄma, Raghupati RÄma and BalarÄma. All of them are RÄmas.