Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 44-45
Sanskrit:
भुञ्जीत तैरनुज्ञात: सेष्ट: शेषं सभाजितै: ।ब्रह्मचार्यथ तद्रात्र्यां श्वोभूते प्रथमेऽहनि ॥ ४४ ॥स्नात: शुचिर्यथोक्तेन विधिना सुसमाहित: ।पयसा स्नापयित्वार्चेद् यावद्व्रतसमापनम् ॥ ४५ ॥
ITRANS:
bhuñjīta tair anujñātaḥseṣṭaḥ śeṣaṁ sabhājitaiḥbrahmacāry atha tad-rātryāṁśvo bhūte prathame ’hani
Translation:
One should perfectly honor the respectable brāhmaṇas one has fed, and then, after taking their permission, one should take prasāda with his friends and relatives. For that night, one should observe strict celibacy, and the next morning, after bathing again, with purity and attention one should bathe the Deity of Viṣṇu with milk and worship Him according to the methods formerly stated in detail.