Śrīmad-Bhāgavatam · Text 7.8.24
Who is speaking and story frame
अलक्षितोऽग्नौ पतित: पतङ्गमो
यथा नृसिंहौजसि सोऽसुरस्तदा ।
न तद्विचित्रं खलु सत्त्वधामनि
स्वतेजसा यो नु पुरापिबत् तम: ॥ २४ ॥
alakṣito ’gnau patitaḥ pataṅgamo
yathā nṛsiṁhaujasi so ’suras tadā
na tad vicitraṁ khalu sattva-dhāmani
sva-tejasā yo nu purāpibat tamaḥ
Just as a small insect falls forcefully into a fire and the insignificant creature becomes invisible, when Hiraṇyakaśipu attacked the Lord, who was full of effulgence, Hiraṇyakaśipu became invisible. This is not at all astonishing, for the Lord is always situated in pure goodness. Formerly, during creation, He entered the dark universe and illuminated it by His spiritual effulgence.
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