One verse

Srimad Bhagavatam 10.78.40

10.78.40

ततश्च भारतं वर्षं परीत्य सुसमाहित: । चरित्वा द्वादश मासांस्तीर्थस्‍नायी विशुध्यसि ॥ ४० ॥

tataś ca bhārataṁ varṣaṁ parītya su-samāhitaḥ caritvā dvādaśa-māsāṁs tīrtha-snāyī viśudhyasi

tataḥ
then
ca
and
bhāratam varṣam
the land of Bhārata (India)
parītya
circumambulating
su-samāhitaḥ
in a serious mood
caritvā
performing penances
dvādaśa
twelve
māsān
months
tīrtha
at holy places of pilgrimage
snāyī
bathing
viśudhyasi
You will be purified

Thereafter, for twelve months, You should circumambulate the land of Bhārata in a mood of serious meditation, executing austerities and bathing at various holy pilgrimage sites. In this way You will become purified.