Aban's Sahiha and Its Impact on Way of Deduction

Aban's Sahiha is a report on diyya (blood-money). According to it men and women's blood-money will be equal if it is less than one third of full blood-money, if not, women's blood-money will decrease into the half of it. This is told by Imam Sadiq, peace be upon him, to Aban. Considering his surprise, Imam Sadiq, peace be upon him, asked him not to make any comparison between them. Aban's Sahiha has been linked up with many general issues of deduction. Some of them which are discussed in this paper are as follows: paralogism, right of priority, reliability of intellect's judgment, possibility of discovering criteria for issuing legal deeds, legitimacy of amputation, and so on. Viewing this report from different perspectives, the author of the present paper tries to illustrate its impact on understanding religious deeds.