Shiva Purana
आनंदबोधयोर्लिंगमंतःकरणविक्रियाः ॥ यथा स्यात्कंपरोमांचस्वरनेत्रांगविक्रियाः ॥ १७ ॥
The symbol of bliss and enlightenment is constituted by the changes and alterations in the mind in the manner of shivering, horripilation and alterations in the voice, eyes and other parts of the body.
english translation
AnaMdabodhayorliMgamaMtaHkaraNavikriyAH ॥ yathA syAtkaMparomAMcasvaranetrAMgavikriyAH ॥ 17 ॥
hk transliteration by Sanscript