Shukla Yajur Veda is a very important Shruti Dharma Grantha of Hindu religion. In Shukla Yajur Veda, there were 15 Sakhas. Sage Yagnavalkya taught these to his students. These fifteen are resepectively: Kanva, Madhyandini, Shapeya, Tapaneeya, Kapola, Paundravatsa, Avatika, Paramavatika, Paaraasarya, Vainadheya, Boudheya, Audheya, Galava, Baijavaapa and Jabala. Of these, the only two surviving Sakhas are the first two, namely, Kanva and Madhyandini, and are considered pre-eminent.