Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 6
Sanskrit:
यं विनिर्जित्य कृच्छ्रेण विष्णु: क्ष्मोद्धार आगतम् ।आत्मानं जयिनं मेने तद्वीर्यं भूर्यनुस्मरन् ॥ ६ ॥
ITRANS:
yaṁ vinirjitya kṛcchreṇaviṣṇuḥ kṣmoddhāra āgatamātmānaṁ jayinaṁ menetad-vīryaṁ bhūry anusmaran
Translation:
When delivering the earth from the Garbhodaka Sea, Lord Viṣṇu, in His incarnation as a boar, killed Hiraṇyākṣa, who had appeared before Him. The fight was severe, and the Lord killed Hiraṇyākṣa with great difficulty. Later, as the Lord thought about the uncommon prowess of Hiraṇyākṣa, He felt Himself victorious indeed.