अथातो व्रतमीमांसा प्रजापतिर्हकर्माणि ससृजे तानि सृष्टान्यन्योन्ये-
In plain words
Now follows the inquiry into the vow: Prajāpati projected the cosmic faculties, and they, once created, mutually...
Close to the Sanskrit
Now therefore the vow-inquiry: Prajapati indeed emitted actions; those created ones mutually...