Verse
य एनं वेत्ति हन्तारं यश्चैनं मन्यते हतम्उभौ तौ न विजानीतो नायं हन्ति न हन्यते ॥
ya enaṃ vetti hantāraṃ yaścainaṃ manyate hatamubhau tau na vijānīto nāyaṃ hanti na hanyate
He who regards this (the soul) as a slayer, and he who thinks it is slain, both of them fail to perceive the truth. It does not slay, nor is it slain.
Gītā 2·19