Bu, Shar’iy matnlarni tekshirib, Hukm uchun sabab yoki maqsad bo‘lgan masalani bilib olishni o‘z ichiga oladi. Buning uchun sabab-natijani bildiruvchi alfozlar (so‘z ifodalari) va uslublar (asalib)ni, ularning matnlarga qo‘llanishini bilish talab etiladi. Masalan, Rasulullah ﷺ ning quyidagi so‘zi sabab (Al-‘Illiyah) ni bildiradimi yoki yo‘qmi, shuni tekshirish kerak bo‘ladi:

This involves examining the Shar’iyah texts to acquire knowledge of the matter that is the cause or motive for the Hukm. This requires us to be knowledgeable of the Alfaazh (worded expressions) and Asaleeb (styles) that establish reasoning, and their application upon the texts. So for example the following statement of the Messenger (saw) would be examined to see if it establishes reasoning (Al-‘Illiyah) or not:

Shunday qilib, har bir hukmi shar'iy ikki asosga tayanadi:

And so in this way every Hukm Shar’iy is based upon two premises:

Birinchisi: Tahqiq al-manat, va bu faqat aqliy (ratsional) jarayondir. Uning maqsadi hukm chiqarilmoqchi bo'lgan narsa yoki masalaning haqiqatini bilishga erishishdir.

The first: Tahqeeq ul-Manaat and this is purely rational. Its purpose is to attain knowledge of the reality of the thing or matter that a Hukm is sought to be pronounced upon.

Ikkinchisi: Bu voqelikka oid shar'iy matnlarni tushunish, ya'ni ularning ichiga kiruvchi 'illatni tahqiq qilish (aniqlash, ishonchli tekshirib belgilash).

The second: Understanding the Shar’iyah texts related to this reality which includes within it the Tahqeeq (verification or ascertainment) of the ‘Illah.

Keyin esa shunday keladi: Birinchisiga ikkinchisini qo'llash. Yoki boshqacha aytganda: haqiqatni bilish va (matnlarni) tushunib, anglab olish orqali o'sha haqiqatga nisbatan Allohning Hukmini bilishga erishiladi.

That is then followed by: Applying the second upon the first. Or said differently: Through acquiring knowledge of the reality and gaining knowledge and understanding (of the texts) the knowledge of the Hukm of Allah in respect to that reality is arrived at.