kṛṣṇa-rāmau pariṣvajya
pitarāv abhivādya ca
na kiñcanocatuḥ premṇā
sāśru-kaṇṭhau kurūdvaha
krishna-ramau -- Krishna and Balarama; parishvajya -- embracing; pitarau -- Their parents; abhivadya -- offering respects; ca -- and; na kincana -- nothing; ucatuh -- said; premna -- with love; sa-asru -- full of tears; kanthau -- whose throats; kuru-udvaha -- O most heroic of the Kurus.
After a long separation, a respectful child should first offer obeisances to his parents. Nanda and Yasoda gave their sons no opportunity for this, however, for as soon as they saw Them they embraced Them. Only then could Krishna and Balarama offer Their proper respects.