Manusmriti
महापातकसंयुक्तोऽनुगच्छेद् गाः समाहितः । अभ्यस्याब्दं पावमानीर्भैक्षाहारो विशुध्यति ॥ २५७ ॥
He who is stained by mortal sin, becomes pure, if, with a concentrated mind, he attends cows for a year, reciting the Pavamani (hymns) and subsisting on alms.
english translation
mahApAtakasaMyukto'nugacched gAH samAhitaH । abhyasyAbdaM pAvamAnIrbhaikSAhAro vizudhyati ॥ 257 ॥
hk transliteration by Sanscript