‘Urf (adat/kebiasaan masyarakat) ialah sama ada ‘Urf fasid, yang tidak diambil kira, atau ‘Urf sahih, yang terbahagi kepada dua jenis: Qawliy (berdasarkan ucapan) dan ‘Amaliy (berdasarkan perbuatan). Setiap satu daripada keduanya seterusnya terbahagi kepada ‘Aamm (umum) dan Khaass (khusus).

The ‘Urf is either a Faasid ‘Urf which is not taken, or a Saheeh ‘Urf which is divided into two types: Qawliy (speech based) and ‘Amaliy (practical/action based). Each of these is further divided into the ‘Aamm (general) and the Khaass (specific).

1 – Al-‘Urf Al-Qawliy yang terbahagi kepada al-‘Aamm dan al-Khaass:

1 – Al-‘Urf Al-Qawliy which is divided into the ‘Aamm and the Khaass:

Adapun ‘Urf Al-Qawliy Al-‘Aamm, maka ia seperti penggunaan lafaz ‘Ad-Daabbah’ untuk setiap haiwan selain manusia, sedangkan lafaz tersebut asalnya diletakkan untuk menunjukkan setiap sesuatu yang bergerak di atas muka bumi termasuk manusia.

- As for the ‘Urf Al-Qawliy Al-‘Aamm then this is like the usage of the Lafzh (wording) ‘Ad-Daabbah for every animal other than the human being whilst the Lafzh (worded expression) was originally placed down to indicate everything that moved upon the face of earth including the human.

'Urf Al-Qawliy Al-Khaass ialah apa yang khusus kepada suatu golongan atau jenis daripada cabang-cabang ilmu, seperti istilah yang telah dipersetujui dan digunakan oleh para ulama Nahw dan Sarf (iaitu tatabahasa Arab). Ini termasuk istilah Al-Mubtada', Al-Khabar, Al-Jaarr, Al-Majroor dan Al-Maf'ool Al-Mutlaq, sebagai contoh. Atau istilah yang digunakan dan diterima pakai oleh para ahli matematik, fizik dan kimia, antara ilmu-ilmu lain.

- As for the ‘Urf Al-Qawliy Al-‘Khaass, then this is what is specific to a particular category or type from the ‘Uloom (sciences) like the agreed upon terminology (Istilaah) employed by the scholars of Arabic Nahw and Sarf (i.e. grammar). This would include the terms Al-Mubtada’, Al-Khabar, Al-Jaarr, Al-Majroor and Al-Maf’ool Al-Mutlaq, for instance. Or the Istilaah (terminology) used and adopted by the scholars of mathematics, physics and chemistry amongst other sciences.

2 – Al-‘Urf Al-‘Amaliy, yang juga terbahagi kepada al-‘Aamm dan al-Khaass:

2 – Al-‘Urf Al-‘Amaliy which is also divided into the ‘Aamm and the Khaass:

- Adapun ‘Urf ‘Amaliy ‘Aamm, maka ini ialah apa yang menjadi kebiasaan penduduk sesebuah negeri secara keseluruhan dalam bentuk amalan praktikal. Contohnya ialah memasuki bilik air tanpa menyatakan tempoh masa tertentu yang akan dihabiskan di dalamnya, atau kebiasaan orang ramai berniaga secara praktikal (melalui perbuatan) tanpa lafaz ijab dan qabul. Iaitu apabila salah seorang daripada mereka mengambil sebuah roti daripada penjual, lalu memberinya dua Qirsh, tanpa kedua-duanya bercakap. - Adapun ‘Urf ‘Amaliy Khaass, maka ini ialah seperti kebiasaan orang di sesetengah bandar atau pekan yang mana penjual memberikan tambahan kepada pembeli melebihi kuantiti yang telah dipersetujui antara mereka. Contohnya, bagi setiap satu tan barang yang dibeli, penjual menambah sepuluh kilogram. Atau ia seperti apa yang menjadi kebiasaan orang ramai dalam hal keluarga isteri menghidangkan sarapan pagi kepada suami isteri yang baru pada pagi pertama mereka bangun sebagai suami isteri.

- As for the ‘Urf Al-‘Amaliy Al-‘Aamm, then this is what the people of a land are accustomed to as a whole practically in action. This is like entering the bathrooms without specifying the specific length of time that will be spent inside of them or like the people being accustomed to trade in practise (by actions) without the worded expressions of offer and acceptance. This would be where one of them would take a loaf from the seller and then give him two Qirsh without either of them speaking. - As for the ‘Urf Al-‘Amaliy Al-Khaass, then this is like people in some cities or towns being accustomed to the seller giving an increase to the buyer above the amount agreed upon between them. This would be for instance like if for every tonne purchased of the goods, the seller would increase the amount by ten kilogrammes. Or it is like what the people are accustomed to doing in respect to the family of the wife presenting breakfast to the new husband and wife on the first morning that they awoke as husband and wife.