pratipat-dinam - on the day of pratipat; ārabhya - beginning; yāvat - until; śukla - of the bright fortnight; trayodaśīm - the thirteenth day of the moon (the second day after Ekādaśī); brahmacaryam - observing complete celibacy; adhaḥ-svapnam - lying down on the floor; snānam - bathing; tri-savanam - three times (morning, evening and noon); caret - one should execute.

From pratipat until the thirteenth day of the next bright moon [śukla-trayodaśī], one should observe complete celibacy, sleep on the floor, bathe three times a day and thus execute the vow.