Matsya Purana 133.14

133.14

vyapagacchatu vo devā mahaddānavajambhayam.
tadahaṃ tripurandhakṣye kriyatāṃ yadbravīmi tat.. 133.14 ..

The three-eyed Lord Śiva whose carrier is buffalo, thus appealed by the Devas said—"O Devas! Cast aside your great fears caused by the Dānavas, I shall reduce the castle Tripura to ashes, but you should do now what I wish you to do If you want me to destroy that fortified town along with the demons, you should fit out my war chariot"—13 15