Al-Qiyos — bu ikki masalaning Hukm ash-Shar'iy doirasida bir-biriga bog'lanishi bo'lib, bunda ikkala masala ‘Illat (sabab-asos) jihatidan birlashadi; ya'ni ‘Illat hukm uchun Ba'ith (sabab, turtki) vazifasini bajaradi.

Al-Qiyaas is the joining of a matter to another matter within the Hukm Ash-Shar’iy due to the two matters being unified in respect to the (commonly shared) ‘Illah (reasoning) in the case where the ‘Illah represents the Baa’ith (reason/cause) for the Hukm.

Qiyos bilan ustunlikka berish (tarjih bi-l-qiyos) — bu bir tarmoqqa oid hukmni qiyos orqali chiqarilgan boshqa bir hukm bilan solishtirib ustun qo‘yish demakdir; ya’ni o‘sha tarmoq uchun boshqa bir matndan olingan boshqa qiyos orqali chiqarilgan hukm bilan.

Outweighing Qiyaas means outweighing a branch Hukm taken by way of Qiyaas upon another Hukm for the same branch also taken by way of another Qiyaas from another text.