One verse

Srimad Bhagavatam 8.16.26

8.16.26

सिनीवाल्यां मृदालिप्य स्‍नायात् क्रोडविदीर्णया । यदि लभ्येत वै स्रोतस्येतं मन्त्रमुदीरयेत् ॥ २६ ॥

sinivalyam mrdalipya snayat kroda-vidirnaya yadi labhyeta vai srotasy etam mantram udirayet

sinivalyam
on the dark-moon day
mrda
with dirt
alipya
smearing the body
snayat
one should bathe
kroda-vidirnaya
dug up by the tusk of a boar
yadi
if
labhyeta
it is available
vai
indeed
srotasi
in a flowing river
etam mantram
this mantra
udirayet
one should chant.

If dirt dug up by a boar is available, on the day of the dark moon one should smear this dirt on his body and then bathe in a flowing river. While bathing, one should chant the following mantra.