It is stated, nigama-kalpa-taror galitaṁ phalam idam (SB 1.1.3). Nigama. Nigama means Vedic literature. Kalpa-taru. Kalpa-taru means desire tree. Desire tree... We have got experience; from the mango tree we get mango, and from coconut tree we get coconut. But desire tree means whatever you want, you can get. Even you can get purīs and halavā from the tree. that is called desire tree. So the Vedic literature is called nigama-kalpa-taru. Nigama, Vedic literature, desire tree, kalpa-taru, taru, kalpa-taru. In the Vedic literature every knowledge is there. Veda means knowledge, perfect knowledge, either material or spiritual. The Vedas are there for the benefit of the human society.
Because the living entity has come here in this material world to enjoy, so direction is there, "All right, you have come here to enjoy. So you enjoy materially under direction. Then gradually you become spiritual and then take liberation." That is the purpose. Karma-kāṇḍa, jñāna-kāṇḍa. Jñāna-kāṇḍa is the path of liberation. Then upāsanā-kāṇḍa.