Bambancin hanyoyin da malaman fiqhu suka bi wajen amfani da Qiyaas shi ne watakila babban dalilin sabanin da ke tsakaninsu. Wasu sun takaita iyakar Qiyaas ta hanyar kafa wasu sharudda da dole ne a cika kafin a yi amfani da shi, yayin da wasu kuma suka fadada iyakarsa.

The various approaches which jurists took in their application of Qiyaas were perhaps the largest source of defferences among them. Some narrowed down the scope of Qiyaas by setting a number of preconditions for its use, while others expanded its scope.

Saboda wannan ka'ida ta dogara ne akan ra'ayi fiye da kowace ɗaya daga cikin sauran, babu ƙa'idodi masu tsauri da za a iya riƙe ta da su, don haka sai aka samu bambance-bambance masu yawa.182

Because this principle was based on opinion to a greater extent than any of the others, there were no hard and fast rules with which to contain it, and thus a wide range of differences developed.182