Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 50
Sanskrit:
मातरं पितरं चैव मोचयित्वाथ बन्धनात् । कृष्णरामौ ववन्दाते शिरसा स्पृश्य पादयो: ॥ ५० ॥
ITRANS:
mātaraṁ pitaraṁ caivamocayitvātha bandhanātkṛṣṇa-rāmau vavandāteśirasā spṛśya pādayoḥ
Translation:
Then Kṛṣṇa and Balarāma released Their mother and father from bondage and offered obeisances to them, touching their feet with Their heads.