Garudapurana 1.135

The glorious Garuḍa Mahāpurāṇa — 135.
Brahmā said: / On the ninth lunar day of the bright fortnight of Āśvina, eating only one meal a day, one should worship / the Goddess and the brāhmaṇas; the observing man should recite the Vīra [mantra] one hundred thousand times.

(Thus the Vīranavamī observance.)
Brahmā said: / On the bright ninth lunar day in Caitra, one should worship the Goddess with damanaka flowers; / [one attains] long life, health, good fortune, and is undefeated by enemies.

(Thus the Damanakanavamī observance.)
Brahmā said: / Eating once a day on the tenth, giving ten cows at the year's end, / and giving golden directions, one becomes the lord of the universe.

(Thus the Digdaśamī observance.) Brahmā said: / On the eleventh lunar day, worship of the sages should be performed, which brings all benefits. / One becomes wealthy, blessed with sons, and at last is glorified in the world of the sages:

Marīci, Atri, Aṅgiras, Pulastya, Pulaha, Kratu, / Pracetas, Vasiṣṭha, Bhṛgu, and Nārada.

At the beginning of Caitra and the like, one should perform worship with garlands made of damanaka. / [These observances] are proclaimed as the Aśokāṣṭamī, the Vīranavamī,

the Damanakanavamī, the Digdaśamī, and the [Ṛṣi-]Ekādaśī.

Thus ends the one hundred and thirty-fifth chapter, entitled “The Observance of Ṛṣyekādaśī,” in the Ācārakāṇḍa, belonging to the first part of the Pūrvakhaṇḍa of the glorious Garuḍa Mahāpurāṇa.