from Chaturveda

(1) The author of Rig Veda is Agni Rishi. Based on practical knowledge and conduct, 10589 mantras are described in this book.
(2) The creator of Yadurveda is Vayu Rishi. 1975 mantras are described in this book based on the knowledge of rituals.
(3) The creator of Samveda is Aditya Rishi. 1875 mantras are described in this book based on the knowledge of worship.
(4) The author of Atharvaveda is sage Angira. 5977 mantras are described in this book based on scientific research.

These Chaturvedas are provided to us as a guide for the protection and imitation of the universe. Which can be known and understood through penance, meditation, initiation, based on senses and conduct.