putrayor abudhau balam
sa-bhayāḥ — fearful; strī — of the women; giraḥ — the words; śrutvā — hearing; putra — for their sons; sneha — by their affection; śuca — with sorrow; āturau — overwhelmed; pitarau — Their parents (Devakī and Vasudeva); anvatapyetām — felt remorse; putrayoḥ — of their two sons; abudhau — not knowing; balam — the strength.
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.
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?”