Shiva Purana

siva.sh/siva-purana/saturda-samhita/42/32

ज्योतिर्लिंगस्वरूपेण संस्थितस्तत्र मुक्तिदः ।। स्वयं सिद्धस्वरूपो हि तथा स्वपुरि स प्रभुः ।। ३२ ।।

sanskrit

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