nāyaṁ hanti na hanyate

yah-anyone; enam-this; vetti-knows; hantaram-the killer; yah-anyone; ca-also; enam-this; manyate-thinks; hatam-killed; ubhau-both of them; tau-they; na-never; vijanitah-in knowledge; na-never; ayam-this; hanti-kills; na-nor; hanyate-be killed.