Srimad-Bhagavatam: Canto 7 - Chapter 1 - Verse 1
श्रीनारद उवाचभ्रातर्येवं विनिहते हरिणा क्रोडमूर्तिना ।हिरण्यकशिपू राजन् पर्यतप्यद्रुषा शुचा ॥ १ ॥
śrī-nārada uvācabhrātary evaṁ vinihatehariṇā kroḍa-mūrtināhiraṇyakaśipū rājanparyatapyad ruṣā śucā
Śrī Nārada Muni said: My dear King Yudhiṣṭhira, when Lord Viṣṇu, in the form of Varāha, the boar, killed Hiraṇyākṣa, Hiraṇyākṣa’s brother Hiraṇyakaśipu was extremely angry and began to lament.
Yudhiṣṭhira had inquired from Nārada Muni why Hiraṇyakaśipu was so envious of his own son Prahlāda. Nārada Muni began narrating the story by explaining how Hiraṇyakaśipu had become a staunch enemy of Lord Viṣṇu.