Nyāya Sūtras 217.2

217.2

kiṃ punar ayaṃ dehādisaṅghātād anyo nityaḥ utānitya iti/ kutaḥ saṃśayaḥ? ubhayathā dṛṣṭatvāt saṃśayaḥ/ vidyamānam ubhayathā bhavati nityam anityaṃ ca/ pratipādite ca ātmasadbhāve saṃśayānivṛttir iti/

Now then, is this [self], distinct from the aggregate of the body and the rest, eternal or non-eternal? Whence the doubt? The doubt arises from [entities] being observed both ways. What is existent is of both kinds: eternal and non-eternal. And even when the existence of the self has been established, the doubt does not cease.