Many Sunni and Shiite foqaha, relying traditions called man balagh have avoided serious weaknesses of the document of traditions denoting two types of religious deeds including those recommended to do and those recommended not to do, and regardless of weakness of documentation, according to traditions` demand, issued religious edict. This manner of feqhi inference has extended to morality and, therefore, many have agreed with such weak documentations in moral traditions also. This paper has studied critically this method of inference with reliance to the tradition the one whom attain a reward from God for a deed, and has supported view opposing such a tolerance in morality. The proofs supporting this view lie in: moral state of being more expansive than those recommended to do, deed and reward`s state of being more expansive than those recommended to do and includes obliged duties also, ultimate effect of such traditions with regard to those established reasonably but not issued.