"That the sense is not known except to Allah and those immersed in knowledge." Then Amir almu'minin dilates upon this theme in a different style, he says that there are some things in it which are necessary to know, such as "So know that there is no god but Allah" and there are others which are not necessary to know such as "alif lam mim" etc. It has also injunctions which have been repealed by the Prophet's action such as "As for your women who commit adultery get four male witnesses and if four witnesses do appear shut such women in the house till death ends their life.