study of forbidden income in islamic law

forbidden income means earn money through illegal and bribery means giving money or property to achieve a specific purpose. bribes are sometimes permitted and sometimes forbidden. licenses and the prohibition of the payment of bribes depends on the purpose it is intended. despite the bribery prohibition does not apply in non-judgment, but because of its prohibition eccles property is void and also because compliance rules and punishment for the committed value. the legal sources, including the quran, sunnah, reason and consensus honor and property bribes forbidden income, are expressed. since the problem of bribery and socio-economic security and endanger the patient's administration; therefore, in most cases as a criminal offense and is intended for those penalties. in this study, we aim to meet existing ideas about the phenomenon and the limits of its forbidden income and criminalization of bribery and the criminalization of the offense in iranian law and comparative study between them and the legal provisions to achieve a proper criminal policy on bribery in the country, which is among the main concerns of the authorities to be able to make a good criminal policy.