Shiva Purana
तत्रापि च यथापूर्वं शिवं शिरसि पूर्ववत् ॥ समभ्यर्च्य च वागीशं प्रणम्य च विसर्जयेत् ॥ ३५ ॥
There too, after worshipping Śiva as before on the head and bowing to Vāgīśa he shall ritualistically dismiss him.
english translation
tatrApi ca yathApUrvaM zivaM zirasi pUrvavat ॥ samabhyarcya ca vAgIzaM praNamya ca visarjayet ॥ 35 ॥
hk transliteration by Sanscript