Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 12

Sanskrit:

सरित्तीरगतं कृष्णं भग्नार्जुनमथाह्वयत् ।रामं च रोहिणी देवी क्रीडन्तं बालकैर्भृशम् ॥ १२ ॥

ITRANS:

sarit-tīra-gataṁ kṛṣṇaṁbhagnārjunam athāhvayatrāmaṁ ca rohiṇī devīkrīḍantaṁ bālakair bhṛśam

Translation:

Once, after the uprooting of the yamala-arjuna trees, Rohiṇīdevī went to call Rāma and Kṛṣṇa, who had both gone to the riverside and were playing with the other boys with deep attention.

Purport:

Mother Yaśodā was more attached to Kṛṣṇa and Balarāma than Rohiṇīdevī was, although Rohiṇīdevī was the mother of Balarāma. Mother Yaśodā sent Rohiṇīdevī to call Rāma and Kṛṣṇa from Their play, since it was the right time for lunch. Therefore Rohiṇīdevī went to call Them, breaking Their engagement in play.