Śrīmad-Bhāgavatam · Text 6.18.71
Who is speaking and story frame
इन्द्र उवाच
अम्ब तेऽहं व्यवसितमुपधार्यागतोऽन्तिकम् ।
लब्धान्तरोऽच्छिदं गर्भमर्थबुद्धिर्न धर्मदृक् ॥ ७१ ॥
indra uvāca
amba te ’haṁ vyavasitam
upadhāryāgato ’ntikam
labdhāntaro ’cchidaṁ garbham
artha-buddhir na dharma-dṛk
Indra replied: My dear mother, because I was grossly blinded by selfish interests, I lost sight of religion. When I understood that you were observing a great vow in spiritual life, I wanted to find some fault in you. When I found such a fault, I entered your womb and cut the embryo to pieces.
Read Śrīla Prabhupāda's purport on Vedabase.io