Ignorant deception responsibility in fiqh and topical law

In Imamich Fiqh and topical law, deception has been proposed as an one of the effective factors in generate the responsibility and sanction. refer to ignorant assumption if meet the its aspects and conditions. These aspects are include the material and spiritual aspects. Material aspects include the meeting the assumption, tricky behavior, generate the loss and causal relations, on the other hand, spiritual aspects are knowing, purpose and deception. But there is proposed evidence in Imamieh Fiqh for ignorant assumption person's sanction: Destruction precept and no-lose precept and the famous tradition of Islam prophet: «??????? ???? ??? ?? ????». For the purpose of use the assumption precept, invent responsibility and artifact the brand of business accredit companies, automobile preclusion companies responsibility about technical deficiency, ignorant assumption in contracts and marriage responsibility to the spouses are researched.