Shiva Purana
कर्ता स्नात्वा धृतप्राण उपवीती समाहितः॥ सपवित्रकरस्त्वस्यां पुण्यतिथ्यामिति ब्रुवन् ॥ ३० ॥
The doer bathes, holds his breath, wears a sash and concentrates. Saying this he should purify himself on this holy occasion.
english translation
kartA snAtvA dhRtaprANa upavItI samAhitaH॥ sapavitrakarastvasyAM puNyatithyAmiti bruvan ॥ 30 ॥
hk transliteration by Sanscript