Al-Qiyaas ni kuunganisha jambo moja na jambo jingine ndani ya Hukm Ash-Shar'iy kwa sababu mambo hayo mawili yameungana kwa 'Illah (sababu ya kisheria) inayoshirikiwa, pale ambapo 'Illah hiyo ndiyo Baa'ith (sababu inayoleta) ya Hukm hiyo.

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.

Kurejesha (kutarajihi) Qiyaas kunamaanisha kurejesha tawi la Hukmu lililochukuliwa kwa njia ya Qiyaas juu ya Hukmu nyingine ya tawi hilo hilo ambayo nayo imechukuliwa kwa njia ya Qiyaas nyingine kutoka kwenye dalili nyingine.

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.