Shiva Purana
ज्योतिर्लिंगस्वरूपेण संस्थितस्तत्र मुक्तिदः ॥ स्वयं सिद्धस्वरूपो हि तथा स्वपुरि स प्रभुः ॥ ३२ ॥
He is stationed there in the form of Jyotirliṅga. In his own city the lord is in the form of Siddha and he confers salvation.
english translation
jyotirliMgasvarUpeNa saMsthitastatra muktidaH ॥ svayaM siddhasvarUpo hi tathA svapuri sa prabhuH ॥ 32 ॥
hk transliteration by Sanscript