The Kushanas were also called as Guishuang as mentioned by various Chinese texts. Kushanas were also known as Tocharians and were one of the five tribes of Yueh-Chi or Yuezhi.
The Shastras contained works of science and philosophy
The Bhagvad Gita a later addition to the Mahabharata enshrines a philosophical doctrine and in it are described the three paths to salvation: karma, gyan and bhakti
The Puranas is important as they were the main influence in the development from early Vedic religion to Hinduism