Which three patterns of corroboration are discussed?

Ahad Reports Corroborated by Indicators: Inferential Knowledge

• The categories sahih, hasan, and daʿif are the three indicators
• Relevant Sahih reports, diverse sound routes, and chains of distinguished masters
• Marfu, mawquf, and maqtu are the three indicators
• The mashhur, aziz, and gharib route categories alone are the added indicators