In Islamic scholarship, the term "da'if" (ضعيف) refers to a hadith (حديث) or narration that is considered weak in terms of its chain of transmission or content. A hadith is classified as da'if when it lacks reliable sources or has inconsistencies that raise doubts about its authenticity. Scholars assess the credibility of narrators and the overall integrity of the narration to determine its strength. Da'if hadiths are generally not used as a basis for establishing legal rulings or beliefs in Islam. However, they may still be referenced for moral guidance or historical context, provided they are not in conflict with stronger narrations. Understanding the classification of hadiths, including da'if, is essential for studying Islamic teachings accurately.