Fasting all the while one should, for three days, with rapt attention pour libations, on the sacred fire, of the urine of the cow mixed with cowdung and milk and clarified butter.
गवां मूत्रपुरीषेण पयसा च घृतेन च॥ अग्निकार्यं त्र्यहं कुर्यात्रिराहारः समाहितः।