Śrīmad-Bhāgavatam · Text 7.8.18
Who is speaking and story frame
स सत्त्वमेनं परितो विपश्यन्
स्तम्भस्य मध्यादनुनिर्जिहानम् ।
नायं मृगो नापि नरो विचित्र-
महो किमेतन्नृमृगेन्द्ररूपम् ॥ १८ ॥
sa sattvam enaṁ parito vipaśyan
stambhasya madhyād anunirjihānam
nāyaṁ mṛgo nāpi naro vicitram
aho kim etan nṛ-mṛgendra-rūpam
While Hiraṇyakaśipu looked all around to find the source of the sound, that wonderful form of the Lord, which could not be ascertained to be either a man or a lion, emerged from the pillar. In amazement, Hiraṇyakaśipu wondered, “What is this creature that is half man and half lion?”
Read Śrīla Prabhupāda's purport on Vedabase.io