About the Book-:The Yajur veda is more pronouncedly a ritual Veda for it is essentially a guide-book for the Adhvaryu priest who had to do practically all ritualistic works in a sacrifice. His works vary from the selection of a plot of land for the sacrificial altar down to offering oblations to the sacred fires. Just as the Samaveda-Samhita is the song-book of the Udgata priest, so the Yajurveda-Samhitas are the prayer-books for the Adhvaryu priest. It is solely meant for the purposes of sacrificial rituals. Rishi Vaishampayana taught the Yajurveda to Rishi Yajyavalkya and other pupils. Once Vaishampayana got angry with Yajyavalkya and asked him to give back what he had learnt. Yajyavalkya vomited the Veda by the power of Yoga, while the other pupils at the command of his teacher swallowed up the Yajush thus vomited, assuming the form of birds called Tittiri. Thus, the Yajush became dark and was named Kishna or Taittiriya. Then Yajyavalkya prayed to the Sun, who came to him in the form of a horse i.e. Vaji) and gave him back the Yajush. Hence this Yajurveda was named Shukla or Vajasaneyi.