Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 22
Sanskrit:
श्रीवत्सधामापररात्र ईश:प्रत्यूष ईशोऽसिधरो जनार्दन: ।दामोदरोऽव्यादनुसन्ध्यं प्रभातेविश्वेश्वरो भगवान् कालमूर्ति: ॥ २२ ॥
ITRANS:
śrīvatsa-dhāmāpara-rātra īśaḥpratyūṣa īśo ’si-dharo janārdanaḥdāmodaro ’vyād anusandhyaṁ prabhāteviśveśvaro bhagavān kāla-mūrtiḥ
Translation:
May the Supreme Personality of Godhead, who bears the Śrīvatsa on His chest, protect me after midnight until the sky becomes pinkish. May Lord Janārdana, who carries a sword in His hand, protect me at the end of night [during the last four ghaṭikās of night]. May Lord Dāmodara protect me in the early morning, and may Lord Viśveśvara protect me during the junctions of day and night.