Abstract: The definition of the Sunnah it is the fourteen immaculate ones (the Holy Prophet his daughter and the twelve Imams) words, action and statement (a confirming silence). The difference of the Sunnah between the Shia and Sunnite Muslims according to the Sunnite Muslims belief, only the Holy Prophet’s words, action and statement are considered as the Sunnah while the Shia Muslims know the Sunnah of the twelve Imams and Hazrat Zahra as a part of the Sunnah. The argument of the Sunnah all the Muslims believe in the Sunnah and this matter is one of the necessities in Islam. But only the Shia Muslims believe in the Imam’s Sunnah and infer to the Quran and the Holy Prophet’s sayings. There are different types of the Sunnah Sunnat-ul-Qual (all words, counsels or percepts of Prophet Mohammad), Sunnat-ul-fieel (his action, works and daily practice) and Sunnat-ul-taqrir (his silence implying a tacit approbation on his part of any individual act committed by his disciples).