Devibhagavatapurana 7.38.35

7.38.35

bhasmībhavanti pāpāni tatkṣaṇānnaga satvaram |
śrāddhakāle paṭhedetānyamalāni dvijāgrataḥ ||

And if one reads, in the time of S'râddha, before the Brahmins, these holy names of the Devî, his Pitris will be purified of their sins in the Mahâkâs'a by the Mahâ Prâna and will get their highest goal. O One of good vows! I will now describe to you the vows that are to be carefully observed by men and women; hear. Ananta Tritîyâkhya Vrata (vow), Rasakalyânî Vrata, and Ârdrânandakara Vrata, these three Vratas are to be observed in the Tritîyâ (third) tithi. The next come the Friday vow, the Krisna Chaturdas'i vows, the Tuesday vow, and the evening twilight vow. In this twilight vow, Mahâ Deva placed the Devî in the evening on an Âsana; and He, along with the other Devas, began to dance before Her. Fasting is enjoined in this vow; and then in the evening one must worship the Devî, the Giver of all auspicious things. Especially in every fortnight, if the Devî be worshipped, She gets extremely pleased.