Shiva Purana
कैलासप्रस्तरो नाम मण्डलम्परिभाषितम् ॥ अर्चयेन्नित्यमेवैतत्पक्षे वा मासिमासि वा ॥ २९॥
The circle called Kailas Prastaro is defined. One should worship this daily in the fortnight or monthly.
english translation
kailAsaprastaro nAma maNDalamparibhASitam ॥ arcayennityamevaitatpakSe vA mAsimAsi vA ॥ 29॥
hk transliteration by Sanscript