Even Balarama did not know that all the calves and cowherd boys were expansions of Krsna or that He Himself was also an expansion of Krsna. This was disclosed to Balarama just five or six days before the completion of the year

Expressions researched:
"Even Balarāma did not know that all the calves and cowherd boys were expansions of Kṛṣṇa or that He Himself was also an expansion of Kṛṣṇa. This was disclosed to Balarāma just five or six days before the completion of the year"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

Up to this time, even Balarāma was captivated by the bewilderment that covered Brahmā. Even Balarāma did not know that all the calves and cowherd boys were expansions of Kṛṣṇa or that He Himself was also an expansion of Kṛṣṇa. This was disclosed to Balarāma just five or six days before the completion of the year.

SB 10.13.28, Translation and Purport

One day, five or six nights before the completion of the year, Kṛṣṇa, tending the calves, entered the forest along with Balarāma.

Up to this time, even Balarāma was captivated by the bewilderment that covered Brahmā. Even Balarāma did not know that all the calves and cowherd boys were expansions of Kṛṣṇa or that He Himself was also an expansion of Kṛṣṇa. This was disclosed to Balarāma just five or six days before the completion of the year.