Shiva Purana
साधने विनियोगे च नित्ये नैमित्तिके तथा ॥ जपेज्जलैर्भस्मना च स्नात्वा मन्त्रेण च क्रमात् ॥ २६ ॥
Whether in the course of practice or application, whether done as a Nitya rite or a Naimittika rite he shall perform the Japa after taking bath with water or with Bhasma.
english translation
sAdhane viniyoge ca nitye naimittike tathA ॥ japejjalairbhasmanA ca snAtvA mantreNa ca kramAt ॥ 26 ॥
hk transliteration by Sanscript