As Basra was the main venue of these contests...
As Basra was the main venue of these contests, he had been there about 20 times, occasionally staying there for six months or so at a stretch and remained engaged in controversies with the different sects of Kharijites, the Ibadiyyah, the Sufriyyah, and Hashwiyyah.[^5] It may be easily concluded from this that he was well versed in philosophy, logic, and theological divergences of the numerous sects without which a man cannot enter the field of controversy at all.
The beautiful use that he later made of reason and common sense in the interpretation of Law and the resolving of abstruse legal problems won him immortal fame and a great deal to the intellectual training which he had received earlier from these exercises of logical argumentation. After keeping himself busy in polemical controversies for a long time and growing sick of them, he turned to Fiqh , i.e. Islamic Law.
Here, with the strength of mind that he possessed, he could not interest himself in the Traditionist school (ahl al-hadith) . He, therefore, joined the Iraqi school of reason with its centre at Kufah. This school of law traced its origin to ‘Ali and ibn Mas‘ud (d. 32/652), after whom their disciples Shuriah (d. 78/697), ‘Alqamah (d. 62/681), and Masruq (d. 63/682) became its accredited leaders, followed in their turn by Ibrahim Nakh‘i (d. 95/714) and Hammad (d. 120/737).
Abu Hanifah took Hammad for his master and kept him company for 18 years, until the latter’s death. Frequently, he also consulted other learned masters of Law and Tradition in the Hijaz on the occasions of pilgrimage, and acquainted himself also with the Traditionist school of thought. On Hammad’s death he was chosen to succeed him.
He occupied that place for 30 years, delivering lectures and discourses, issuing legal verdicts, and doing the work which formed the foundation of the Hanafi School of law named after him. In these 30 years he answered some 60,000 (according to other estimates, 83,000) legal queries, all of which were later compiled under different heads in his lifetime.[^6] Some seven to 800 of his students spread to different parts of the Islamic world and filled important seats of learning.
They were entrusted with issuing legal opinions and guiding the education of the masses, and became objects of heartfelt veneration for the multitudes. About 50 of them were appointed judges after his death during the ‘Abbasid reign.