The Most important Kalimas of Islam which are necessary for each muslim to memorize and learn are the Six Kalimas of Islam. These Kalimas contains the whole meaning of Islam. Starting from the Kalima Tayyaba which recognizes the presence of Allah and His sole Power over all the universe, and Hazrat Muhammad (PBUH) to be His last Prophet. Similalry the second kalima also known as the Kalima of Shahadat give declaration about the Oneness of Allah and the Hazrat Muhammad (PBUH) to be His Last Prophet. Similalry all the kalimas are very important and very fruitfull if recited regularly.