Shatapatha Brahmana 6.7.3.11

6.7.3.11

haṃsaḥ śuciṣaditi | asau vā ādityo haṃsaḥ śuciṣadvasurantarikṣasaditi vāyurvai vasurantarikṣasaddhotā vediṣadityagnirvai hotā vediṣadatithiriti sarveṣāṃ vā eṣa bhūtānāmatithirduroṇasaditi viṣamasadityetannṛṣaditi prāṇo vai nṛṣanmanuṣyā narastadyo 'yam manuṣyeṣu prāṇo 'gnistametadāha varasaditi sarveṣu hyeṣa vareṣu sanna ṛtasaditi satyasadityetadvyomasaditi sarveṣu hyeṣa vyomasu sanno 'bjā gojā ityabjāśca hyeṣa gojāśca 'rtajā iti satyajā ityetadadrijā ityadrijā hyeṣa ṛtamiti satyamityetadbṛhaditi nidadhāti bṛhaddhyeṣa tadyadeṣa tadenametatkṛtvā nidadhāti

[Vâg. S. XII, 14; Rik S. IV, 40, 5] 'The swan dwelling in the light,'--the swan dwelling in the light, doubtless, is yonder sun;--'the Vasu dwelling in the air,'--the Vasu dwelling in the air, doubtless, is the wind;--'the priest seated on the altar,'--the priest seated on the altar, doubtless, is Agni;--'the guest,'--for he (Agni) is indeed the guest of all beings;--'dwelling in the retreat,'--that is, 'dwelling in rugged places;'--'the man-dwelling,'--the man-dwelling, doubtless, is the vital air; and men are human beings: he thus means that vital air, that fire, which (burns) in human beings;--'the space-dwelling,'--for he (Agni) indeed is seated in all spaces;--'the law-seated,'--that is, 'the truth-seated;'--'the sphere-dwelling,'--for he is indeed seated in all spheres;--'the water-born, cow-born'--for he is indeed both water-born and cow-born;--'law-born,'--that is, 'truth-born;'--'rock-born,'--for he is born from the rock;--'the law,'--that is, 'the truth.' With 'the Great!' he deposits it (the fire); for he (Agni) is indeed the great (truth): he thus deposits him (on the seat) after making him what he is.