Passage
Chandogya Upanisad chup_5,17.2
san chandogya
atsy annaṃ paśyasi priyam / atty annaṃ paśyati priyaṃ bhavaty asya brahmavarcasaṃ kule ya etam evam ātmānaṃ vaiśvānaram upāste / pādau tv etāv ātmana iti hovāca / pādau te vyamlāsyetāṃ yan māṃ nāgamiṣya iti