So this is the description of quadruple expansion of the Supreme Personality of Godhead. Advaitam acyutam anādir ananta-rūpam (Bs. 5.33). How ananta-rūpam of Kṛṣṇa is expanded, now this is the beginning of such description. The first expansion is Balarāma, Baladeva. Nāyam ātmā bala-hīnena labhyaḥ. It is... In the Upaniṣad it is said, "Ātmā, the Supreme Soul, cannot be understood without being favored by Balarāma." This Balarāma sometimes misunderstood as the bodily strength, that "Without physical strength, nobody can attain the Supreme Personality of Godhead." But that is not the fact. Bala-hīnena means one who is not favored by Balarāma or Nityānanda, he cannot make any progress to understand the Supreme Personality of Godhead. That is the real meaning, bala-hīnena: "without the favor of Balarāma." Balarāma is guru-tattva, and Balarāma is present in this age as Nityānanda. So bala-hīnena labhyaḥ does not mean "without any physical strength." One has to get favor of Nityānanda Prabhu. Nityānanda Prabhu, katiya mohan, avadhya karuna sindhu katiya mohan, durlabha kṛṣṇa-prema kare jare tare jana.(?) There is a song like that.
So this first expansion is Balarāma. And from Balarāma, then catur-vyūha, Vāsudeva, Saṅkarṣaṇa, Aniruddha... Pradyumna, Aniruddha. So the Saṅkarṣaṇa feature of the Supreme Personality of Godhead who is the controller of bhūtendriya-manomayam.