एतेन पूजाविधिना मासान् द्वादश हायनम् । नीत्वाथोपरमेत्साध्वी कार्तिके चरमेऽहनि ॥ २१ ॥
etena pūjā-vidhinā māsān dvādaśa hāyanam nītvāthoparamet sādhvī kārtike carame ’hani
The chaste wife must perform such devotional service continuously for one year. After one year passes, she should fast on the full-moon day in the month of Kārttika [October-November].
This verse states it should be followed for twelve months—one full year—using the described worship procedure.
It should be concluded on the final day of the month of Kārtika.
It teaches disciplined, time-bound devotion—commit to a consistent sādhana for a set period and complete it properly rather than practicing irregularly.