Chandogya Upanishad 5.15

atha hovāca janaṃ śārkarākṣyam śārkarākṣya kaṃ tvam ātmānam upāssa iti ākāśam eva bhagavo rājann iti hovāca eṣa vai bahula ātmā vaiśvānaro yaṃ tvam ātmānam upāsse tasmāt tvaṃ bahulo 'si prajayā ca dhanena ca

Then he said to Gana Sârkarâkshya: 'Whom do you meditate on as the Self?' He replied: 'Ether only, venerable king.' He said: 'The Self which you meditate on is the Vaisvânara Self, called Bahula (full). Therefore you are full of offspring and wealth.

atsy annaṃ paśyasi priyam atty annaṃ paśyati priyaṃ bhavaty asya brahmavarcasaṃ kule ya etam evam ātmānaṃ vaiśvānaram upāste saṃdehas tv eṣa ātmana iti hovāca saṃdehas te vyaśīryad yan māṃ nāgamiṣya iti

'You eat food and see your desire, and whoever thus meditates on that Vaisvânara Self, eats food and sees his desire, and has Vedic glory in his house. That, however, is but the trunk of the Self, and your trunk would have perished, if you had not come to me.'