Majmu' al-Zawa'id wa Manba' al-Fawa'id (Arabic: مجمع الزوائد ومنبع الفوائد) is a secondary Sunni hadith collection written by Ali ibn Abu Bakr al-Haythami (1335–1404 CE/735–807 AH).
As the Centuries passed, some authors began to compile secondary collections of hadith derived from the primary collections – those with isnads[broken anchor] connecting those hadith they contain to their sources.
One method of composition of these works was al-zawa'id, the extraction of any 'unique' hadith found in one collection but not in another.
The hadith gathered by al-Haythami are those not found in the six canonical hadith collections: Sahih Bukhari, Sahih Muslim, Sunan al-Sughra, Sunan Abu Dawood, Sunan al-Tirmidhi and Sunan Ibn Majah.”[3] It is considered secondary because it was collected from previous hadith collections and does not include the isnad[broken anchor] of the hadith.
In spite of the fact that its source books are primarily arranged as musnads, Majma' al-Zawa'id is arranged in the manner of a sunan collection – by topical chapter titles relating to jurisprudence.