从语言学角度看,"قياس"(Qiyas)的含义是估量、衡量,或确定某物的长度、重量或品质,因此秤被称为"miqyas"(标尺)。作为法学术语,大多数乌莱玛将Qiyas定义为:"将原案(asl)的裁决(Hukm),因双方共有的有效理由('Illa),适用于律法未作规定的新案(far')。"11

The linguistic meaning of Qiyas is means estimation, measuring or ascertaining the length, weight, or quality of something, which is why scales are called miqyas. As a juristic term Qiyas the majority of Ulema have defined Qiyas as, „the application to a new case (far'), on which the law is silent, of the ruling (Hukm) of an original case (asl) because of the effective reason ('Illa) which is in common to both.‟11

以下是一个关于类比（Qiyas）的例子：

The following is an example of Qiyas:

“信道的人们啊!当星期五聚礼的召唤声响起时,你们就应当赶快去记念真主,放下买卖。这对你们来说是更好的,如果你们知道的话。礼拜完毕后,你们就可以散布在大地上,谋求真主的恩惠,并且要常常记念真主,以便你们得以成功。”(《古兰经》62:9-10)

“O you who have attained faith! When the call to prayer is sounded on the day of congregation (Friday), hasten to the remembrance of Allah, and leave all worldly commerce: this is for your own good, if you but knew it. And when the prayer is ended, disperse freely on Earth and seek to obtain Allah‟s bounty; but remember Allah often, so that you might attain to a happy state!” (TMQ al-Juma‟: 9-10)

该经文提到，听到召唤礼拜的呼声时，应当停止一切世俗的买卖。经文并未提及要停止进食、休息或其他任何事情，只提到了停止经商。经文还提到，礼拜结束后，就应当散去，去寻求真主的恩赐。这说明停止买卖是有其原因的：如果不停止，人就会沉湎其中，从而忘记礼拜。

The Ayah mentions that, when the call to prayer is given, one should disengage from all worldly commerce. The Ayah doesn‟t mention to stop such acts as eating, resting, or anything else other than conducting business. The Ayah mentions that when the prayer is over, disperse and seek Allah‟s bounty. This means that there is a reason to leave the commerce, being that if we do not, then we will be preoccupied and will forget the prayer.

将"Qiyas"应用于此例时，其适用范围并不限于商业，而是可以扩展到其他一切活动。这是因为导致错过主麻拜的"Illah"（动因/效力因）同样存在于这些活动之中。因此，在主麻时间内，工作、娱乐、饮食等都是被禁止的，因为所有这些活动都会妨碍穆斯林履行主麻拜。

The application of Qiyas for this example would be for any other activity besides commerce. This is because the „Illah (missing the Juma‟ prayer) occurs due to these activities as well. Therefore, working, playing, eating etc. are prohibited in the time of Juma‟ because all of these activities prevent Muslims from performing the Juma‟ prayer.