والطريق الثاني: السبر والتقسيم
The second method is examination and division (sabr wa-taqsīm).
Division (taqsīm) lists the plausible attributes of the original case that could explain the judgment. Examination (sabr) tests these candidates and eliminates those unfit to serve as causes.
The aim is not to treat every resemblance as explanatory, but to identify the relevant cause among the competing possibilities.