TAITTIRĪYA UPANISHAD · 3.9

अन्नं बहु कुर्वीत । तद्व्रतम् । पृथिवी वा अन्नम् ।
आकाशोऽन्नादः । पृथिव्यामाकाशः प्रतिष्ठितः ।
आकाशे पृथिवी प्रतिष्ठिता ।
तदेतदन्नमन्ने प्रतिष्ठितम् ।
स य एतदन्नमन्ने प्रतिष्ठितं वेद प्रतितिष्ठति ।
अन्नवानन्नादो भवति । महान्भवति प्रजया
पशुभिर्ब्रह्मवर्चसेन । महान् कीर्त्या ।

annaṃ bahu kurvīta । tadvratam । pṛthivī vā annam ।
ākāśo’nnādaḥ । pṛthivyāmākāśaḥ pratiṣṭhitaḥ ।
ākāśe pṛthivī pratiṣṭhitā ।
tadetadannamanne pratiṣṭhitam ।
sa ya etadannamanne pratiṣṭhitaṃ veda pratitiṣṭhati ।
annavānannādo bhavati । mahānbhavati prajayā
paśubhirbrahmavarcasena । mahān kīrtyā ।

Thou shalt increase and amass food; for that too is thy commandment unto labour. Verily, earth also is food and ether is the eater. Ether is established upon earth and earth is established upon ether. Here too is food established upon food. He who knoweth this food that is established upon food, getteth his firm base. He becometh the master of food and its eater, great in progeny, great in cattle, great in the radiance of holiness, great in glory.

Sri Aurobindo · CWSA 18, p. 229