Pitṛgaṇa-Vibhāga (Classification of the Pitṛs) and the Śrāddha–Soma Nourishment Cycle
योगिनी योगपत्नी च योगमाता तथैव च / भविता द्वापरं प्राप्य अष्टाविंशतिमेव तु
yoginī yogapatnī ca yogamātā tathaiva ca / bhavitā dvāparaṃ prāpya aṣṭāviṃśatimeva tu
She shall be a yoginī, the yogin’s wife, and also the Mother of Yoga; and upon reaching the Dvāpara age, she shall be the twenty-eighth.