Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 18

Sanskrit:

सभया: स्त्रीगिर: श्रुत्वा पुत्रस्‍नेहशुचातुरौ । पितरावन्वतप्येतां पुत्रयोरबुधौ बलम् ॥ १८ ॥

ITRANS:

sa-bhayāḥ strī-giraḥ śrutvāputra-sneha-śucāturaupitarāv anvatapyetāṁputrayor abudhau balam

Translation:

Out of affection for the two Lords, Their parents [Devakī and Vasudeva] became overwhelmed with sorrow when they heard the women’s fearful statements. They grieved, not knowing their sons’ strength.

Purport:

Naturally, Kṛṣṇa’s parents would lament in this situation, thinking “Why didn’t we keep our sons at home? Why did we allow Them to participate in this corrupt exhibition?”