Chandogya Upanishad 7.10.2

7.10.2

sa yo 'po brahmety upāste \
āpnoti sarvān kāmāṃs tṛptimān bhavati \
yāvad apāṃ gataṃ tatrāsya yathākāmacāro bhavati yo 'po brahmety upāste \
asti bhagavo 'dbhyo bhūya iti \
adbhyo vāva bhūyo 'stīti \
tan me bhagavān bravītv iti \\710.2\

'He who worships water as Brahman obtains all desires and becomes satisfied. He becomes free to act as he wishes in the sphere within the reach of water, he who worships water as Brahman.' 'Revered sir, is there anything greater than water?' 'Surely, there is something greater than water.' 'Revered sir, communicate it to me.'