Abu Zayd al-Dabusi

Abū Zayd al-Dabūsī; he is Abd Allāh, or Ubaid Allāh ibn Umar ibn ‘Īsa al-Dabūsi al-Bukhārī Hanafī al-Qadī (عبد الله أو عبيد الله بن عمر بن عيسى الدّبوسي البخاري الحنفي القاضي); a founding jurist and most eminent scholar of the Hanafī school in the eleventh century. His reputation for learning was proverbial. He established the science of dialectics supporting his analysis and argument on examples extracted from scripture. He composed several taalīkas. Among his writings were Asrār ('Mysteries') and the Takwīm lil Adilla (‘system of demonstrations’). Ad-Dabūsi died in the city of Bukhara in 430 AH / 1038–9.

The name Dabūsi derives from the town Dabūsiya, which lies between Bukhāra and Samarkand, and from where a number of scholars hailed.