Bṛhadāraṇyaka Upaniṣad ("Great Forest Teaching") 1.4.17

1.4.17

ātmaivedamagra āsīdeka eva so'kāmayata jāyā me syādatha prajāyeyātha vittaṃ me syādatha karma kurvīyetyetāvānvai kāmo neccham̐ścanāto bhūyo vindettasmādapyetarhyekākī kāmayate jāyā me syādatha prajāyeyātha vittaṃ me syādatha karma kurvīyeti sa yāvadapyeteṣāmekaikaṃ na prāpnotyakṛtsra eva tāvanmanyate tasyo kṛtsnatā mana evāsyātmā vāgjāyā prāṇaḥ prajā cakṣurmānuṣaṃ vittaṃ cakṣuṣā hi tadvindate śrotraṃ daivam̐ śrotreṇa hi tacchṛṇotyātmaivāsya karmātmanā hi karma karoti sa eṣa pāṅkto yajñaḥ pāṅktaḥ paśuḥ pāṅktaḥ puruṣaḥ pāṅktamidam̐ sarvaṃ yadidaṃ kiṃca tadidam̐ sarvamāpnoti ya evaṃ veda

In the beginning this was Self alone, one only. He desired, 'Let there be a wife for me that I may have offspring, and let there be wealth for me that I may offer sacrifices.' Verily this is the whole desire, and, even if wishing for more, he would not find it. Therefore now also a lonely person desires, 'Let there be a wife for me that I may have offspring, and let there be wealth for me that I may offer sacrifices.' And so long as he does not obtain either of these things, he thinks he is incomplete. Now his completeness (is made up as follows): mind is his self (husband); speech the wife; breath the child; the eye all worldly wealth, for he finds it with the eye; the ear his divine wealth, for he hears it with the ear. The body (âtman) is his work, for with the body he works. This is the fivefold sacrifice, for fivefold is the animal, fivefold man, fivefold all this whatsoever. He who knows this, obtains all this.

1.4.17.p1

iti prathamādhyāye caturthaṃ brāhmaṇam