Bhagavad Gita 1.35

एतान्न हन्तुमिच्छामि घ्नतोऽपि मधुसूदन।अपि त्रैलोक्यराज्यस्य हेतोः किं नु महीकृते ॥१.३५॥

etānna hantumicchāmi ghnato’pi madhusūdanaapi trailokyarājyasya hetoḥ kiṃ nu mahīkṛte

These I do not wish to kill, O Krishna, even though they kill me, for the sake of dominion over the three worlds; leave alone killing them for the sake of the earth."

गीता