Shiva Purana
मुखम्प्रथमतो मृज्य शिर आरभ्य सर्वतः ॥ तेनैव मार्जयेद्देहं स्थित्वा च गुरुसन्निधौ ॥ १८ ॥
He shall wipe off his face first and then the head and other parts of the body standing by the side of the preceptor.
english translation
mukhamprathamato mRjya zira Arabhya sarvataH ॥ tenaiva mArjayeddehaM sthitvA ca gurusannidhau ॥ 18 ॥
hk transliteration by Sanscript