Hadith is classified into two main groups: 1. Sahih (authentic): These are Hadith that are considered to be genuine and reliable, meeting the highest standards of authenticity. 2. Daif (weak): These are Hadith that are considered to be less reliable or authentic, due to issues with the chain of narrators or other factors. However, some scholars also categorize Hadith into additional groups, such as: - Hasan (good): These are Hadith that are considered to be reliable, but not to the same level as Sahih. Mawdu' (fabricated): These are Hadith that are considered to be false or fabricated. Maqlub (reversed): These are Hadith that have been altered or distorted in some way. But the most common and basic classification is into two groups: Sahih and Daif.