In observing a fast, one should purify himself by a bath, and adorn his body with ornaments and unguents. One should always abstain from sexual union on days of the full moon and the new moon.
उपवासं च कुर्वीत स्नातः शुचिरलंकृतः॥ पर्वकालेषु सर्वेषु ब्रह्मचारी सदा भवेत्।