Sauptika Parva
The Owl and the Crows – Ashwatthama Chooses Night Warfare
After leaving the fallen Duryodhana, Ashwatthama, Kripa and Kritavarma rest in a forest. Kripa and Kritavarma fall asleep, but Ashwatthama remains awake, consumed by grief and anger over Drona's death.
He sees an owl attack sleeping crows in a tree, killing them while they are helpless. The scene gives him the idea of striking the Pandava camp at night when the warriors are asleep and unprepared.
Kripa warns that killing sleeping enemies violates accepted warrior conduct and urges restraint. Ashwatthama rejects the warning, arguing that the war has already destroyed ordinary rules and that vengeance is now his only purpose.
The owl becomes the grim model for his plan. What follows is not a normal continuation of battle but a deliberate night massacre after the main war has effectively ended.