Waɗannan suna cikin manyan littattafai da aka rubuta bisa wannan hanya:

The following are from the most significant books written upon this method:

1) 'Risaalah Al-Karkhi Fee Usool' wanda Abu l-Hasan 'Ubaidulah Bin Al-Hasan Al-Karkhi ya rubuta, wanda ya rasu a shekara ta 340 bayan hijira. A cikinta ya ambaci Usulan da yawancin littattafan almajiran Imam Abu Haneefah suka dogara a kansu. 2) 'Usool Al-Jassaas' wanda Abu Bakr Ahmad Bin 'Ali Ar-Raaziy Al-Jassaas Al-Hanafiy ya rubuta, wanda ya rasu a shekara ta 370 bayan hijira. Ya bi tafarkin Al-Karkhiy a littafinsa.

1) ‘Risaalah Al-Karkhi Fee Usool’ authored by Abu l-Hasan ‘Ubaidulah Bin Al-Hasan Al-Karkhi who passed away in the year 340 AH. In it he mentioned the Usool upon which a large number of the books of the followers of Al-Imaam Abu Haneefah revolve around. 2) ‘Usool Al-Jassaas’ written by Abu Bakr Ahmad Bin ‘Ali Ar-Raaziy Al-Jassaas Al-Hanafiy who passed away in the year 370 AH. He proceeded in his book upon the Tareeqah of Al-Karkhiy.