Mbh 10.1.8

"'Beholding that highly suggestive deed perpetrated in the night by the owl, Drona's son began to reflect on it, desirous of framing his own conduct by the light of that example. He said unto himself, "This owl teaches me a lesson in battle. Bent as I am upon the destruction of the foe, the time for the deed has come! The victorious Pandavas are incapable of being slain by me! They are possessed of might, endued with perseverance, sure of aim, and skilled in smiting. In the presence, however, of the king I have vowed to slay them. I have thus pledged myself to a self-destructive act, like an insect essaying to rush into a blazing fire! If I were to fight fairly with them, I shall, without doubt, have to lay down my life! By an act of guile, however, success may yet be mine and a great destruction may overtake my foes! People generally, as also those versed in the scriptures, always applaud those means which are certain over those which are uncertain. Whatever of censure and evil repute this act may provoke ought to be incurred by person that is observant of Kshatriya practices. The Pandavas of uncleansed souls have, at every step, perpetrated very ugly and censurable acts that are again fall of guile. As regards this matter, certain ancient verses, full of truth, are heard, sung by truth-seeing and righteousness-observing persons, who sang them after a careful consideration of the demands of justice.