य एनं वेत्ति हन्तारं यश्चैनं मन्यते हतम्। उभौ तौ न विजानीतो नायं हन्ति न हन्यते ॥

ya enaṁ vetti hantāraṁ yaśh chainaṁ manyate hatam ubhau tau na vijānīto nāyaṁ hanti na hanyate

He who regardeth this as a slayer, and he who thinketh he is slain, both of them are ignorant. He slayeth not, nor is he slain.

In plain words: Anyone who thinks the soul kills, or thinks the soul gets killed, does not understand. The soul does not kill, and it cannot be killed.