The origins of the Sunnah by Ahmed bin Hanbal

The book of the origins of the Sunnah for Imam Ahmad - may God have mercy on him - is considered one of the most important books in the report of the doctrine of the Sunnis and the community, in which: a report of the general controls and basic rules that control the doctrine of the predecessors that contradict the people of innovation, and the liberation of the origins of the doctrine of the surviving division of the Sunnis and the group that the Messenger of God was on - May God's prayers and peace be upon him - and his companions.