Explanation of knowledge of the hadiths of rulings

"Knowledge of the hadiths of the rulings", it is for a book that was placed in the hadiths of the rulings, which is preserved by the novice beneficiary, and the helpful jurist and whoever understands his significance, he pulled the hand of the mission, and descended from his heart and glorifying the dearest place and status. And his author was required in which he only mentioned the hadith of thos...