وَمِنَ الْمُهِمِّ أَيْضًا مَعْرِفَةُ مَرَاتِبِ التَّعْدِيلِ
It is also important to recognize different degrees of endorsement.
At the strongest end are emphatic assessments such as “awthaq al-nās” (“among the most reliable”) and “ilayhi al-muntahā fī al-tathabbūt” (“the utmost in verification”). These say more than that the transmitter was merely respectable.
Yet even an exceptionally strong endorsement does not resolve every question about a specific chain. An interruption elsewhere or a proven conflict in one narration still requires analysis.