This post is in continuation of the Post Veda essential Details.
Each Veda has Srautha Sutras.
Srautha Sutras explain the Rules for Conducting the Yagas and Yangnas.
Yagas are condcuted with a specific purpose while Yagna is performed because it is a Duty.
Puthra KameshtiYaga for example is a Yaga while Brahma Yagnam isa Yagna; the former is performed for begetting Children, the later is performed because it is a Duty.
Rig Veda has Sanakayana, Aswalaayana Sutras.
Shukla Yajur Veda has Kathyaayana Sutra,
