Hiranyakeshigrihyasutra 1.2.6.3

1.2.6.3

agnau pṛthivyāṃ pratitiṣṭha vāyāvantarikṣe sūrye divi \ yāṃ svastimagnirvāyurādityaścandramā āponusaṃcaranti tāṃ svastimanusaṃcarāsau \ prāṇasya brahmacāryabhūrasau \ ityubhayatrānuṣajati \3\

Both times he adds (to the verses quoted in the last Sûtras the formula), 'Stand fast in Agni and on the earth, in Vâyu and in the air, in Sûrya and in heaven. The bliss in which Agni, Vâyu, the sun, the moon, and the waters go their way, in that bliss go thy way, N.N.! Thou hast become the pupil of breath, N.N.!'