Katha Upanisad kau_5.12

eko vaśī sarvabhūtāntarātmā ekaṃ rūpaṃ bahudhā yaḥ karoti / tam ātmasthaṃ ye 'nupaśyanti dhīrās teṣāṃ sukhaṃ śāśvataṃ netareṣām