Sayyid Razee (r.a.) has narrated in NahjulBalagha that in a sermon in which Imam Ali (a.s.) has described Aale Muhammad (a.s.) has said that he (Ali) is the preserver and custodian of the secrets of the Holy Prophet (S) and also the shelter in connection with the affairs of Prophethood and is the treasure of knowledge and the resounding of his command and the library of his books and the rope of his Religion; that Allah has retained the straightness of His Religion through them (a.s.); that Allah has removed fear from Religion; that the Aale Muhammad (a.s.) cannot be compared with any other persons of this Ummah nor can any other group equal them because Muslims have got blessings only through them and also only through them the people received guidance.