Shatapatha Brahmana 6.2.3.10

6.2.3.10

prajāpatiḥ prathamāṃ citimapaśyat | prajāpatireva tasyā ārṣeyaṃ devā dvitīyāṃ citimapaśyandevā eva tasyā ārṣeyamindrāgnī ca viśvakarmā ca tṛtīyāṃ citimapaśyaṃsta eva tasyā ārṣeyamṛṣayaścaturthīṃ citimapaśyannṛṣaya eva tasyā ārṣeyam parameṣṭhī pañcamīṃ citimapaśyatparameṣṭhyeva tasyā ārṣeyaṃ sa yo haitadevaṃ citīnāmārṣeyaṃ vedārṣeyavatyo hāsya bandhumatyaścitayo bhavanti

Pragâpati saw the first layer: Pragâpati assuredly is its (spiritual) ancestry. The gods saw the second layer: the gods assuredly are its ancestry. Indra and Agni, and Visvakarman saw the third layer: they assuredly are its ancestry. The Rishis saw the fourth layer: the Rishis assuredly are its ancestry. Parameshthin saw the fifth layer: Parameshthin assuredly is its ancestry. And, verily, whosoever so knows that (spiritual) ancestry of the structures (layers of the fire-altar), his structures are indeed possessed of an ancestry, possessed of relations (or, of mystic significance, bandhu).