Garudapurana 1.36

Glorious Garuḍa Mahāpurāṇa — 36
Hari said: / I will proclaim the rule of twilight worship, which destroys sin, listen, O Rudra. / Having performed three breath controls, one should begin the twilight bath.

With breath held, one should recite three times Gāyatrī / accompanied by the praṇava, the vyāhṛtis, and the head [mantra]; that is called breath control.

A twice-born should burn away faults born of mind, speech, and body with breath controls; / therefore, at all times one should be devoted to breath control.

Saying 'May fire and [manyu]…' at evening, and 'May the sun…' at morning, he should sip water. / At noon, saying 'May the waters purify…,' having properly performed sipping,

he should perform sprinkling with the verse beginning with 'Waters indeed are…' using kuśa-water. / Combined with the praṇava, he should cast water at every verse-foot.

Born of passion and darkness, born of his own delusion, born of waking, dreaming, and deep sleep, / born of speech, mind, and action—these nine faults he should burn with the nine [verses].

Taking up water in the hand and reciting the drupadā [verse], he should cast it out; / he should repeat the sin-expelling rite three, eight, or twelve times.

With the two [hymns] 'Up arise…' and 'The wonderful…,' he should attend upon the sun. / Whatever sin is committed by day or by night, all is destroyed in that very instant.

One should recite standing during the morning twilight and seated during the evening [twilight] / Gāyatrī accompanied by the great vyāhṛtis and endowed with the praṇava.

With ten [repetitions] Gāyatrī destroys sin born of this life; with a hundred, that done in a past life; / and with a thousand, that accumulated over three ages.

Gāyatrī is red; Sāvitrī is white-colored; / Sarasvatī should be known as black—thus the three twilights are declared.

Placing 'Oṃ bhūḥ' on the heart, one should place 'Oṃ bhuvaḥ' on the head, / and 'Oṃ svaḥ' on the topknot, [and] the first foot of Gāyatrī

the wise one should place on the armor; the second he should place on the eyes; / with the third he should perform bodily placement; the fourth he should place everywhere.

Having performed the placement at twilight, he should recite the Mother of the Vedas. / May it be auspicious for him; during the entire day he should engage in breath control and ritual placement.

The three-footed Gāyatrī is Brahmā, Viṣṇu, and Maheśvara; / having known the application, the seer, and the meter, one should begin recitation.

Freed from all sins, one attains the world of Brahman. / 'Beyond the dust, may he who… Oṃ' is proclaimed as the fourth foot.

The sun destroys him who does not perform worship at twilight. / The seer of this fourth foot also is the Stainless One;

the meter is the goddess Gāyatrī, and the deity is the Supreme Self.

Thus ends the thirty-sixth chapter, titled 'The Rule of Twilight Worship,' in the Conduct Section of the first part in the first section of the glorious Garuḍa Mahāpurāṇa.