pitarāv abhivādya ca
na kiñcanocatuḥ premṇā
After a long separation, a respectful child should first offer obeisances to his parents. Nanda and Yaśodā gave their sons no opportunity for this, however, for as soon as they saw Them they embraced Them. Only then could Kṛṣṇa and Balarāma offer Their proper respects.