Ramayana
यच्च तस्य महच्छूलं त्र्यम्बकेण महात्मना । दत्तं शत्रुविनाशाय मधोरायुधमुत्तमम् ॥ 7-63-25 ॥
"And as for that great spear which was given to Madhu by the great-souled three-eyed god, Tryambaka, for the destruction of his enemies — that supreme weapon —"
english translation