Chandogya Upanishad 5.1.10

5.1.10

śrotraṃ hoccakrāma \
tat saṃvatsaraṃ proṣya paryetyovāca katham aśakatarte maj jīvitum iti \
yathā badhirā aśṛṇvantaḥ prāṇantaḥ prāṇena vadanto vācā paśyantaś cakṣuṣā dhyāyanto manasaivam iti \
praviveśa ha śrotram \\501.10\

The ear departed. Staying a year out, it came back and asked, 'How have you been able to live without me?' 'Just like the deaf, though not hearing, yet living with the breath, speaking with the organ of speech, seeing with the eye, and thinking with the mind.' At this the ear entered the body.