Shiva Purana
विष्णुभक्तिसमायुक्तः शिवनिन्दां करोति यः ॥ पित्रोः क्षयाहमासाद्य शून्यं चैवाक्रमेदिह ॥ ४६ ॥
He who is engaged in devotion to Lord Visnu and who blasphemes Lord Siva Having reached the demise of his father he should occupy the void here.
english translation
viSNubhaktisamAyuktaH zivanindAM karoti yaH ॥ pitroH kSayAhamAsAdya zUnyaM caivAkramediha ॥ 46 ॥
hk transliteration by Sanscript