Mbh 5.187.1b

He invoked the great Brahma weapon. For baffling it I also used the same excellent weapon. Clashing against each other, the two weapons began to blaze forth brightly, showing what happens at the end of the Yuga! Without being able to reach either myself or Rama, those two weapons, O best of the Bharatas, met each other in the mid-air. Then the whole welkin seemed to be ablaze, and all creatures, O monarch, became highly distressed. Afflicted by the energy of those weapons, the Rishis, the Gandharvas, and the gods were all greatly pained. Then earth, with her mountains and seas and trees began to tremble, and all creatures, heated with the energy of the weapons, were greatly afflicted. The firmament, O king, became ablaze and the ten points of the horizon became filled with smoke. Creatures, therefore, that range the welkin were unable to stay in their element. When, at all this, the whole world with the gods, the Asuras and the Rakshasas began to utter exclamations of woe.--This is the time--thought I and became desirous, O Bharata, of speedily shooting the Praswapa weapon at the command of those utterers of Brahma (that had appeared to me in my dream)! The Mantras also for invoking excellent weapon suddenly came to my mind!”’”