 The hypothetical syllogism consisting of a conditional and a categorical premise is the most prominent case in the extensive treatment of the Qiyās. The analysis occupies two chapters whose sequential order seems to be all but accidental. The classification of arguments follows familiar criteria but in this case the order of priority is different. The first parameter depends on what the shared part is. There are two main types according to whether the connection between major and minor premise obtains in the consequent (Qiyās VI.4) or in the antecedent of the conditional premise (Qiyās VI.5). The second parameter depends on whether the major is categorical or conditional.