In hadith studies, there are different classifications of hadith in order to better understand their sources or their content:

Classification based on the number of the narrators of the source: khabar al-wahid, khabar al-mustafid, and khabar al-mutawatir,

Classification based on the authenticity of the source: sahih and its subtypes (sahih mudaf, al-muttafaq 'alayh, a'la, awsat, adna), hasan, mawthuq, qawi, da'if and its subtypes (al-mudraj, al-mushtarak, al-musahhaf, al-mu'talaf, and al-mukhtalaf),

Classification based on connection or disconnection of the chain of references: al-musnad, al-muttasil, al-marfu', al-mawquf, al-maqtu', al-mursal, al-munqati', al-mu'dal or al-mushkil, al-mudmar, al-mu'allaq, al-mu'an'an, al-muhmal,

Classification based on text: al-nass, al-zahir, al-mu'awwal, al-mutlaq and al-muqayyad, al-'am and al-khass, al-mujmal and al-mubayyan, al-mukatab and al-mukatiba, al-mashhur, al-matruk, al-matruh, al-Hadith al-Qudsi, al-shadh, al-maqlub, al-mutashabih

Classification based on acting upon the hadith: hujjat and la hujjat, maqbul, nasikh and mansukh