Chandogya Upanishad 5.21

atha yāṃ tṛtīyāṃ juhuyāt tāṃ juhuyād apānāya svāheti apānas tṛpyati

'And he who offers the third oblation, should offer it to Apâna (down-breathing), saying Svâhâ. Then Apâna is satisfied. If Apâna is satisfied, the tongue is satisfied, if the tongue is satisfied, Agni (fire) is satisfied, if Agni is satisfied, the earth is satisfied, if the earth is satisfied, whatever is under the earth and under fire is satisfied.

apāne tṛpyati vāk tṛpyati vāci tṛpyantyām agnis tṛpyati agnau tṛpyati pṛthivī tṛpyati pṛthivyāṃ tṛpyantyāṃ yat kiṃca pṛthivī cāgniś cādhitiṣṭhatas tat tṛpyati tasyānutṛptiṃ tṛpyati prajayā paśubhir annādyena tejasā brahmavarcaseneti

'And through their satisfaction he (the sacrificer or eater) himself is satisfied with offspring, cattle, health, brightness, and Vedic splendour.