All of them should observe the vows laid down for a person who has neglected his sacrificial fire, or practise the of Chandrayana for month, or some other painful vow, for purging themselves off their sin.
चरेयुः सर्व एवैते वीरहा यद् व्रतं चरेत्। चान्द्रायणं चरेन्मासं कृच्छ्रे वा पापशुद्धये॥ परिवेत्ता प्रयच्छेत तां स्नुषां परिवित्तये।