Knowledge of ahadith is essential in an effort to understand Islam. They contain rules and regulations, when implemented, would give cause to a better understanding of everyday life. This is applicable, to the individual of a society and also to the society as a whole. The messages within the ahadith are for the benefit of both, individual and society. 
Selected collection from : Sahih al-Bukhari, Sahih Muslim
Sunan Ibn Majah, Sunan Abu Dawud, Jami al-Tirmidhi and Sunan al-Nisai