Shiva Purana
शिवनिन्दां करोतीह तत्त्वमज्ञाय यः पुमान्॥ आजन्मसंचितं पुण्यं तस्य भस्मीभवत्युत ॥ ४१॥
The accumulated merits of the person who insults Śiva without knowing reality are reduced to ashes.
english translation
zivanindAM karotIha tattvamajJAya yaH pumAn॥ AjanmasaMcitaM puNyaM tasya bhasmIbhavatyuta ॥ 41॥
hk transliteration by Sanscript