Bhagwad Gita
Chapter 2, Verse 19
य एनं वेत्ति हन्तारं यश्चैनं मन्यते हतम्।
उभौ तौ न विजानीतो नायं हन्ति न हन्यते।।2.19।।
He who thinks that the living entity is the slayer or that he is slain, does not understand. One who is in knowledge knows that the self slays not nor is slain.