BṚHADĀRAṆYAKA UPANISHAD · 6.4.19

अथाभिप्रातर् एव स्थालीपाकावृताज्यं चेष्टित्वा स्थालीपाकस्योपघातं जुहोत्य् अग्नये स्वाहानुमतये स्वाहा देवाय सवित्रे सत्यप्रसवाय स्वाहेति ।
हुत्वोद्धृत्य प्राश्नाति ।
प्राश्येतरस्याः प्रयच्छति ।
प्रक्षाल्य पाणी उदपात्रं पूरयित्वा तेनैनां त्रिर् अभ्युक्षति --
उत्तिष्ठातो विश्वावसो ऽन्याम् इच्छ प्रपूर्व्याम् ।
सं जायां पत्या सहेति ॥

athābhiprātar eva sthālīpākāvṛtājyaṃ ceṣṭitvā sthālīpākasyopaghātaṃ juhoty agnaye svāhānumataye svāhā devāya savitre satyaprasavāya svāheti ।
hutvoddhṛtya prāśnāti ।
prāśyetarasyāḥ prayacchati ।
prakṣālya pāṇī udapātraṃ pūrayitvā tenaināṃ trir abhyukṣati --
uttiṣṭhāto viśvāvaso ’nyām iccha prapūrvyām ।
saṃ jāyāṃ patyā saheti ॥

Now, toward morning, having prepared melted butter in the manner of the Sthâlîpâka, he takes of the Sthâlîpâka and makes a libation, saying: 'To Agni, hail! To Anumati, hail! To the god Savitri ('Enlivener,' the Sun), whose is true procreation (satya-prasava), hail!' Having made the libation, he takes and eats, Having eaten, he offers to the other [i.e. to her]. Having washed his hands, he fills a vessel with water and therewith sprinkles her thrice, saying:-- 'Arise from hence, Vis'vavasu! Some other choicer maiden seek! This wife together with her lord ----'

Robert Ernest Hume · The Thirteen Principal Upanishads (1921), Bṛhadāraṇyaka VI.4