Śrīmad-Bhāgavatam · Text 3.17.27
Who is speaking and story frame
तत्रोपलभ्यासुरलोकपालकं
यादोगणानामृषभं प्रचेतसम् ।
स्मयन् प्रलब्धुं प्रणिपत्य नीचव-
ज्जगाद मे देह्यधिराज संयुगम ॥ २७ ॥
tatropalabhyāsura-loka-pālakaṁ
yādo-gaṇānām ṛṣabhaṁ pracetasam
smayan pralabdhuṁ praṇipatya nīcavaj
jagāda me dehy adhirāja saṁyugam
Vibhāvarī is the home of Varuṇa, lord of the aquatic creatures and guardian of the lower regions of the universe, where the demons generally reside. There Hiraṇyākṣa fell at Varuṇa’s feet like a lowborn man, and to make fun of him he said with a smile, “Give me battle, O Supreme Lord!”
Read Śrīla Prabhupāda's purport on Vedabase.io