Shiva Purana
आजानु जलमाविश्य मंत्रस्नानं समाचरेत् । देवादींस्तर्पयेद्विद्वांस्तत्र तीर्थजलेन च १७ ।
Sprinkling water upto the knees he shall perform the Mantrasnāna. He shall propitiate deities etc. sensibly with the water from the holy tank or river.
english translation
AjAnu jalamAvizya maMtrasnAnaM samAcaret । devAdIMstarpayedvidvAMstatra tIrthajalena ca 17 ।
hk transliteration by Sanscript