Mbh 5.56.4a

“Sanjaya said, ‘O great king, the celestial artificer called Tashtri or Bhaumana, aided by Sakra and Dhatri, created forms of diverse kinds and great beauty for Arjuna’s car. And displaying divine illusion they placed on his flagstaff those celestial forms, large and small, of great value. And at Bhimasena’s request, Hanumat, the son of the Wind-god, will also place his own image on it. And Bhaumana has, in its creation, had recourse to such illusion that that banner covers, both perpendicularly and laterally, an area of one yojana, and even if trees stand in its way, its course cannot be impeded. Indeed, even as Sakra’s bow of diverse colours is exhibited in the firmament, and nobody knows of what it is made, so hath that banner been contrived by Bhaumana, for its form is varied and ever varying. And as a column of smoke mixed with fire riseth up, covering the sky and displaying many bright hues and elegant shapes, so doth that banner contrived by Bhaumana rear its head. Indeed, it hath no weight, nor is it capable of being obstructed. And unto that car are a century of excellent celestial steeds of white hue and endued with the speed of the mind, all presented by Chitrasena (the king of the Gandharvas). And neither on earth, O king, nor in the sky, nor in heaven, their course can be impeded. And formerly a boon hath been granted to the effect that their number would always remain full how often so ever they might be slain. And unto Yudhishthira’s car are yoked large steeds of equal energy and white in colour like ivory. And unto Bhimasena’s car are yoked coursers endued with the speed of the wind and the splendour of the seven Rishis. And steeds of sable bodies and backs variegated like the wings of the Tittri bird, all presented by his gratified brother Falguna, and superior to those of the heroic Falguna himself, cheerfully carry Sahadeva.