Shiva Purana
तत्रैकां मृदमादाय दापयित्वान्यपाणिना ॥ करौ द्वादशधा लिप्य प्रत्येकं केन क्षालयेत् ॥ ११ ॥
Taking a lump of clay he shall wipe off his hands with it twelve times. Each of the hands shall be separately washed with water.
english translation
tatraikAM mRdamAdAya dApayitvAnyapANinA ॥ karau dvAdazadhA lipya pratyekaM kena kSAlayet ॥ 11 ॥
hk transliteration by Sanscript