Accepted Hadith is classified on three bases:
• Farq al-marātib: differences in the ranks of narrators' qualities.
• Taʿāruḍ: whether accepted reports appear to conflict in meaning.
• Ziyādat al-maḍmūn: whether additional content is transmitted.
These are distinct bases for classification. Do not give one basis another's name; first identify what the discussion concerns.