Ramayana
जामातरं न जाने स्म प्रहरन्युद्धदुर्मदः । तेनासौ निहतः सङ्ख्ये मया भर्ता तव स्वसः ॥ 7-24-34 ॥
"Maddened with the frenzy of war as I struck, I did not recognize my son-in-law; and so, O sister, your husband was slain by me in the conflict.
english translation