Shiva Purana
ततः पंचाक्षरं जप्त्वा शतरुद्रि यमेव च । स्तुतीर्नानाविधाः कृत्वा पंचांगपठनं तथा ५१ ।
Then he shall repeat the five-syllabled mantra, Śatarudriya, many Saiva hymns and read Pañcāṅga and perform circumambulation.
english translation
tataH paMcAkSaraM japtvA zatarudri yameva ca । stutIrnAnAvidhAH kRtvA paMcAMgapaThanaM tathA 51 ।
hk transliteration by Sanscript