Manusmriti

siva.sh/manusmriti/11/259

त्र्यहं तूपवसेद् युक्तस्त्रिरह्नोऽभ्युपयन्नपः । मुच्यते पातकैः सर्वैस्त्रिर्जपित्वाऽघमर्षणम् ॥ २५९ ॥

sanskrit

But if (a man) fasts during three days, bathing thrice a day, and muttering (in the water the hymn seen by) Aghamarshana, he is (likewise) freed from all sins causing loss of caste.

english translation

tryahaM tUpavased yuktastrirahno'bhyupayannapaH | mucyate pAtakaiH sarvaistrirjapitvA'ghamarSaNam || 259 ||

hk transliteration by Sanscript