Shatapatha Brahmana 11.1.1

11.1.1.1

saṃvatsaro vai yajñaḥ prajāpatiḥ tasyaitaddvāraṃ yadamāvāsyā candramā eva dvārapidhānaḥ

Verily, Pragâpati, the Sacrifice, is the Year: the night of new moon is its gate, and the moon itself is the bolt of the gate.

11.1.1.2

sa yo'māvāsyāyāmagnī ādhatte yathā vivṛtāyāṃ dvāri dvārā puram prapadyeta sa tata eva svargaṃ lokamiyādevaṃ tadyo'māvāsyāyāmādhatte

And when one lays down the two fires at new moon,--even as one would enter a stronghold by the gate, when the gate is open, and would thence reach the world of heaven, so it is when one lays down the fires at new moon.

11.1.1.3

atha yo nakṣatra ādhatte yathāpihitāyāṃ dvāryadvārā puram prapitsetsa jihmaḥ puraḥ syādevaṃ tadyo nakṣatra ādhatte tasmānna nakṣatra ādadhīta

11.1.1.4

yadaharevaiṣaḥ na purastānna paścāddṛśyeta tadaharupavasettarhi hyeṣa imaṃ lokamāgacati tasminniha vasati

On the same day on which that one (the moon) should not be seen either in the east or in the west, let him fast, for it is then that he (the moon) comes to this world, and on that (day) he abides here (on the sacrificial ground).

11.1.1.5

sarve devā vasanti sarvāṇi bhūtāni sarvā devatāḥ sarva ṛtavaḥ sarve stomāḥ sarvāṇi pṛṣṭhāni sarvāṇi candāṃsi

And all the gods abide (here), all the spirits, all the deities, all the seasons, all the Stomas (hymn-forms), all the Prishthas, and all the metres.

11.1.1.6

sarveṣu ha vā asya deveṣu sarveṣu bhūteṣu sarvāsu devatāsu sarveṣvṛtuṣu sarveṣu stomeṣu sarveṣu pṛṣṭheṣu sarveṣu candaḥsvagnī āhitau bhavato yo'māvāsyāyāmādhatte tasmādamāvāsyāyāmevāgnī ādadhīta

And, verily, it is for all the gods, for all spirits, for all deities, for all seasons, for all Stomas, for all Prishthas, and for all metres that the fires of him are laid down who lays them down at new moon: he should therefore lay them down at new moon.

11.1.1.7

yo'sau vaiśākhasyāmāvāsyā tasyāmādadhīta sā rohiṇyā sampadyata ātmā vai prajā paśavo rohiṇyātmanyevaitatprajāyām paśuṣu pratitiṣṭhatyamāvāsyā vā agnyādheyarūpaṃ tasmādamāvāsyāyāmevāgnī ādadhīta paurṇamāsyāmanvārabhetāmāvāsyāyāṃ dīkṣeta

He may lay down the fires on the new moon which falls in the (month) Vaisâkha, for that coincides with the Rohinî (asterism); for the Rohinî means the self, offspring and cattle: he thus becomes established in a self, in offspring and cattle. But, indeed, the new moon is the form of the Agnyâdheya: let him therefore lay down the fires at new moon;--let him perform the preliminary ceremony at full moon, and the initiation ceremony at new moon.