Bhagavad Gita 1.45

अहो बत् महत्पापं कर्तुं व्यसिता वयम् |
यद्साम्सुखलोबेन हन्तुं स्वजनमुद्यता:

Translation

Alas! How strange it is that we have set our mind to perform this great sin with horrifying consequences. Driven by the desire for kingly pleasures, we are intent on killing our own kinsmen.