What is the ruling on the narrations of a trustworthy narrator whom scholars have agreed "has delusions and anomalies" and not rarely so? Should they be considered sound, or must one pause until certainty of the absence of his delusion is attained?

The fundamental principle is to accept the narration of a trustworthy person, assuming they have not erred or been mistaken, unless proven otherwise. If the conditions for authenticity are met in a Hadith (definition), then it is ruled as such, because the default is the absence of anomaly (shudhudh). The determination of whether a trustworthy narrator has erred or not rests with the imams of criticism (imams of naqd). Unless a damaging defect appears in the Hadith, the default is the soundness and precision of what the trustworthy narrator has transmitted.