Who among the following Islamic scholars developed the theory of "The Four Sources of Shariah"?

Who among the following Islamic scholars developed the theory of "The Four Sources of Shariah"?

مندرجہ ذیل اسلامی اسکالرز میں سے کس نے "شریعت کے چار ذرائع" کا نظریہ تیار کیا؟
Explanation

Al-Shafi'i (d. 820 CE) was a renowned Islamic scholar and jurist who developed the theory of "The Four Sources of Shariah" (الشرعية الأربعة):

  1. Quran (القرآن)
  2. Hadith (الحديث)
  3. Ijma (الإجماع) - Consensus of the Muslim community
  4. Qiyas (القياس) - Analogical reasoning