civil liability of inconclusive cause with view to islamic criminal code 1392

there are three elements to identify the responsibilities of each party, loss, harmful act, and causality relation between the act and losses is essential and in among these three elements the third element has special importance and lack of proof of this element carries lack of responsibility. finding this relationship in the presumption that agent of loss is inconclusive between specified persons is difficult. some in this presumption believe that because of lack of causal relationship there is no responsibility that this is not according to justice. but in this assumption there is responsibility and as result the responsibility is proved and the only issue is that losing acts exist in the same time so unpredictable of loss is probable. so with prove of responsibility in respect of compensation different methods are suggested. some accept  the option of judge in choice of the liable person, some believe that compensation should be paid by beyt alma. some believe that for specify the final liable should take action via ballot. other group states that by rely on equity rule, distribution of liability between individuals is possible. in the view of statute law, duty of this subject has not been expressed but exact analysis of this subject and also existence some ground in relation to inconclusive cause in islamic criminal law (section477 and 479) and possibility of contagion of these issue to civil liability of inconclusive cause show that joint and equal liability of agents. is cause.