Hadith

An account of the words, deeds, or endorsements of the Prophet Muhammad. 

Hadiths hold great importance in Islam, as they provide additional context and details for understanding the Quran’s teachings. Each hadith generally includes two components: the isnad (the chain of narrators) and the matn (the actual content of the narration). 

The authenticity of hadiths is assessed and categorized into various degrees, such as sahih (sound), hasan (good), and da‘if (weak), based on the credibility of the narrators and the consistency of the content. Renowned collections of hadith, like Sahih al-Bukhari and Sahih Muslim, are highly respected and extensively studied in the Islamic tradition.