Śatapatha Brāhmaṇa ("of a hundred paths") 3.5.3.13

3.5.3.13

athāparaṃ caturgṛhītamājyaṃ gṛhītvā | upaniṣkrāmati dakṣiṇayā dvārā patnīṃ niṣkrāmayanti sa dakṣiṇasya havirdhānasya dakṣiṇāyāṃ vartanyāṃ hiraṇyaṃ nidhāya juhotīdaṃ viṣṇurvicakrame tredhā nidadhe padam samūḍhamasya pāṃsure svāheti saṃsravam patnyai pāṇāvānayati sākṣasya saṃtāpamupānakti devaśrutau deveṣvāghoṣatamiti prayacati pratiprasthātre srucaṃ cājyavilāpanīṃ ca paryāṇayanti patnīmubhau jaghanenāgnī

Having then taken ghee a second time in four ladlings, he walks out (of the hall by the front door). The (sacrificer's) wife is led out by the south door. He then lays down a piece of gold in the right wheel-track of the southern Sonia-cart, and offers thereon, with (Vâg. S. V, 15; Rig-veda I, 22, 17), 'Vishnu strode through this(universe),thrice he put down his foot: it is enveloped in his dust; Hail!' The residue (of ghee) he pours into the wife's hand. She anoints the burning (part) of the axle with (Vâg. S. V, 17), 'Audible to the gods, announce ye unto the gods!' He hands to his assistant both the offering-spoon and the melting-pot. They lead the wife round by the back of the two fires.