Consider a hypothetical chain in which the transmitters' uprightness and their actual connections are verified. One narrator retains reports less consistently than the strongest experts but remains acceptably accurate. No established anomaly or disqualifying hidden defect affects this particular report.
Stage 1: Uprightness and continuity are satisfied.
Stage 2: Precision is adequate but somewhat lighter.
Stage 3: No decisive contradiction or damaging hidden defect remains.
Outcome: The report is hasan li-dhatihi, accepted on its own qualifying isnad without indispensable assistance from another route.
Actual casework must verify each requirement separately for the specific chain under consideration.