That man who fasts on the twelfth day of the moon in the month called Margashira and adores Krishna as Keshava for the whole day and night, acquires the merits of the Horse sacrifice and becomes purged off of all his sins.
द्वादश्यां मार्गशीर्षे तु अहोरात्रेण केशवम्। अाश्वमेधं प्राप्नोति दुष्कृतं चास्य नश्यति॥