Kauṣītaki Upaniṣad 3.1.16

3.1.16

sa yo māṃ veda na ha vai tasya kena cana karmaṇā loma mīyate na steyena na bhrūṇahatyayā na mātṛvadhena na pitṛvadhena /

So he who understands me—by no deed whatsoever of his is his world injured, not by stealing, not by killing an embryo, not by the murder of his mother, not by the murder of his father; if he has done any evil (_pāpa_), the dark color departs not from his face.’