Shiva Purana
कृत्वापि सुमहत्पापं भक्त्या यजति यश्शिवम् ॥ मुच्यते पातकैः सर्वैर्नात्र कार्या विचारणा ॥ ६७ ॥
Even after committing great sin, if any one worships Śiva with devotion he is liberated from the sin. No hesitation need be made in this respect.
english translation
kRtvApi sumahatpApaM bhaktyA yajati yazzivam ॥ mucyate pAtakaiH sarvairnAtra kAryA vicAraNA ॥ 67 ॥
hk transliteration by Sanscript