Shiva Purana
तीर्थस्नानैस्तपोभिर्वा दुष्टात्मा नैव शुध्यति ॥ श्वदृतिः क्षालिता तीर्थे किं शुद्धिमधिगच्छति ॥ १९ ॥
A vicious soul is not sanctified by the waters in the pilgrim spots nor by austerities. Does the canine hide become pure when washed in a holy river?
english translation
tIrthasnAnaistapobhirvA duSTAtmA naiva zudhyati ॥ zvadRtiH kSAlitA tIrthe kiM zuddhimadhigacchati ॥ 19 ॥
hk transliteration by Sanscript