Skandapurana 6.3.103.94

6.3.103.94

pratipacca dvitīyā ca tṛtīyā ca maheśvari .
caturthī pañcamī caiva avyayā ṣoḍaśī kalā .. 103.94 ..

The first lunar day, the second, and the third, O Maheśvarī,
the fourth, and the fifth, up to the imperishable sixteenth digit;