About the Qur'an, Amir al-mu'minin says that it contains description of the permitted and the forbidden acts such as "Allah has allowed sale and purchase but prohibited usury."It clarifies obligatory and optional acts such as "when you have finished the prayer (of fear) remember Allah rising, sitting or lying and when you feel safe (from the enemy) then say the prayers (as usual)."Here prayer is obligatory while other forms of remembering (Allah) are optional. It has repealing and repealed verses such as about the period of seclusion after husband's death "four months and ten days" or the repealed one such as "till one year without going out" which shows that this period of seclusion should be one year. In particular places it permits the forbidden such as "whoever is compelled without being wilfully wrongful or transgressor, commits no sins."It has positive injunctions such as "One should not add anyone with Allah in worship." It has particular and general injunctions. Particular is the one where the word shows generality but the sense is limited such as "I have made you superior over worlds, O' Bani Isra'il."Here the sense of "Worlds," is confined to that particular time, although the word is general in its literal meaning. The general injunctions is one which is extensive in meaning such as "Allah has knowledge of everything." It has lessons and illustrations lessons such as "Allah caught him in the punishment of this world and the next and there is lesson in it.""There is a lesson in it for him who fears Allah," and illustration as "The example of those who spend their wealth in the way of Allah is like a grain which grows seven ears each one of which bears hundred grains." It has unspecific and specific verses. Unspecific is one which has no limitation on specification such as "Recall when Moses told his people 'Allah commands you to sacrifice a cow.'"Specific is one where denotation is limited such as Allah says that "the cow should be such that it has neither been used for ploughing nor for irrigation fields." There is clear and obscure in it. Clear is that which has no intricacy such as "Verily Allah has sway over everything," while obscure is that whose meaning has complication such as "the Merciful (Allah) occupies the throne," whose apparent meaning gives the impression as if Allah is bodily sitting on the Throne although the intention is to press His authority and control. In it there are brief injunctions such as "establish prayer" and those of deep meanings such as the verses about which says:"That the sense is not known except to Allah and those immersed in knowledge." Then Amir al-mu'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." This punishment was current in early Islam but was later replaced by stoning in the case of married women. In it there are some injunctions which repealed the Prophet's action such as "Turn your face towards Masjid al-haram" by which the injunction for facing Bayt al-maqdis was repealed. It also contains injunctions which are obligatory only at a particular time after which their obligation ends, such as "when the call for prayer is made on Friday then hasten towards remembrance of Allah." It has also indicated grades of prohibitions as the division of sins into light and serious ones

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