SN 12.35 says:
“Not a valid question,” the Blessed One replied. “Bhikkhu, whether one says, ‘What now is aging-and-death, and for whom is there this aging-and-death?’ or whether one says, ‘Aging-and-death is one thing, the one for whom there is this aging-and-death is another’—both these assertions are identical in meaning; they differ only in the phrasing. If there is the view, ‘The soul and the body are the same,’ there is no living of the holy life; and if there is the view, ‘The soul is one thing, the body is another,’ there is no living of the holy life. Without veering towards either of these extremes, the Tathagata teaches the Dhamma by the middle: ‘With birth as condition, aging-and-death. ’
Why is there no living the holy life when there is the view, ‘The soul and the body are the same,’ and if there is the view, ‘The soul is one thing, the body is another’?
"Jīva, 1. the soul. Sabbe jīvā all the souls, enumerated with sattā pāṇā bhūta in the dialect used by the followers of Gosāla D. I, 53 (=DA. I, 161 jīvasaññī). “taṃ jīvaṃ taṃ sarīraṃ udāhu aññaṃ j. aññaṃ s. ” (is the body the soul, or is the body one thing and the soul another?)" https://www.wisdomlib.org/definition/jiva#pali (Scroll down to "Pali-English dictionary" to find the rest)
– Caoimhghin Mar 11 '22 at 12:24