One verse

Srimad Bhagavatam 8.16.50

8.16.50

त्रयोदश्यामथो विष्णो: स्‍नपनं पञ्चकैर्विभो: । कारयेच्छास्त्रद‍ृष्टेन विधिना विधिकोविदै: ॥ ५० ॥

trayodasyam atho visnoh snapanam pancakair vibhoh karayec chastra-drstena vidhina vidhi-kovidaih

trayodasyam
on the thirteenth day of the moon
atho
thereafter
visnoh
of Lord Visnu
snapanam
bathing
pancakaih
by pancamrta, five substances
vibhoh
the Lord
karayet
one should execute
sastra-drstena
enjoined in the scripture
vidhina
under regulative principles
vidhi-kovidaih
assisted by the priests who know the regulative principles.

Thereafter, following the directions of the sastra with help from brahmanas who know the sastra, on the thirteenth day of the moon one should bathe Lord Visnu with five substances (milk, yogurt, ghee, sugar and honey).