SB 10.65.30
tato vyamuñcad yamunam
yacito bhagavan balah
vijagaha jalam stribhih
karenubhir ivebha-rat
Translation:
[Sukadeva Gosvami continued:] Thereupon Lord Balarama released the Yamuna and, like the king of the elephants with his entourage of she-elephants, entered the river’s water with His female companions.