Talking about the difference in the hadiths of the Prophet is of great importance because of its impact on many hadith and jurisprudence investigations, and that is why scholars have taken care of it since ancient times, clarifying its types, its impact and the sound approach in dealing with it, whether in judging the hadith or in deducing the legal ruling and weighting between the evidence. This book presents to the honorable reader a theoretical and applied study of some of the topics related to the different narrations with an indication of their impact on jurisprudence rulings, limited to what was mentioned in the book of prayer through the two Sahihs.