Shiva Purana
अपरे मण्डले दद्यात्पञ्चगव्यं तथा गुरुः ॥ सो ऽपि तच्छक्तितः पीत्वा द्विराचम्य शिवं स्मरेत् ॥ ३५ ॥
The preceptor shall give him the Pañcagavya on the other Maṇḍala. The disciple shall drink it upto his capacity, perform the Ācamana twice and remember Śiva.
english translation
apare maNDale dadyAtpaJcagavyaM tathA guruH ॥ so 'pi tacchaktitaH pItvA dvirAcamya zivaM smaret ॥ 35 ॥
hk transliteration by Sanscript