Śatapatha Brāhmaṇa ("of a hundred paths") 2.4.4.6

2.4.4.6

teno ha tata īje | dakṣaḥ pārvatista ime 'pyetarhi dākṣāyaṇā rājyamivaiva prāptā rājyamiha vai prāpnoti ya evaṃ vidvānetena yajate tasmādvā etena yajeta sa vā ekaika evānūcīnāham puroḍāśo bhavatyeteno hāsyāsapatnānupabādhā śrīrbhavati sa vai dve paurṇamāsyau yajate dve amāvāsye dve vai mithunam mithunamevaitatprajananaṃ kriyate

That same sacrifice was afterwards performed by Daksha Pârvati; and even to this day these (descendants of his) the Dâkshâyanas are possessed of the royal dignity: royal dignity he, therefore, here obtains, whosoever, knowing this, performs that sacrifice: let him, therefore, perform that sacrifice.--Day by day there is one cake: thereby Fortune (srî) is (wedded) to him without a rival wife and undisturbed. He offers on two days of the full moon and on two of the new moon: for two means a pair, so that a productive pair is thereby obtained.