The condition of juristic competence in a conflict with analogy is associated especially with 'Isa b. Aban and those who agreed with him. Abu al-Hasan al-Karkhi is presented with another approach: accept the established narration of every upright transmitter, provided it does not conflict with the Qur'an or established widespread Sunnah, without requiring an additional condition of being a jurist.
The dispute does not concern whether transmitted revelation has authority at all. It concerns a narrow case of apparent conflict between an individual report and analogy when the transmitter is not noted for specialized legal analysis.
This illustrates genuine methodological diversity inside a school concerning narrator qualifications and weighing evidence.