CHĀNDOGYA UPANISHAD · 5.10.6

अभ्रं भूत्वा मेघो भवति ।
मेघो भूत्वा प्रवर्षति ।
त इह व्रीहियवा ओषधिवनस्पतयस् तिलमासा इति जायन्ते ऽतो वै खलु दुर्निष्प्रपतरम् ।
यो यो ह्य् अन्नम् अत्ति यो रेतः सिञ्चति तद् भूय एव भवति ॥

abhraṃ bhūtvā megho bhavati ।
megho bhūtvā pravarṣati ।
ta iha vrīhiyavā oṣadhivanaspatayas tilamāsā iti jāyante ’to vai khalu durniṣprapataram ।
yo yo hy annam atti yo retaḥ siñcati tad bhūya eva bhavati ॥

'Having become mist, he becomes a cloud, having become a cloud, he rains down. Then he is born as rice and corn, herbs and trees, sesamum. and beans. From thence the escape is beset with most difficulties. For whoever the persons may be that eat the food, and beget offspring, he henceforth becomes like unto them.

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)