Shiva Purana
इत्थमावरणाभ्यर्चां कृत्वाविक्षेपशांतये ॥ पुनरभ्यर्च्य देवेशं पक्त्वाक्षरमुदीरयेत् ॥ ७८ ॥
After performing the Āvaraṇa Pūjā thus, he shall worship the lord again for quietening distraction and perplexity and utter the five-syllabled mantra.
english translation
itthamAvaraNAbhyarcAM kRtvAvikSepazAMtaye ॥ punarabhyarcya devezaM paktvAkSaramudIrayet ॥ 78 ॥
hk transliteration by Sanscript