Abū ‘Abd Allāh Muḥammad ibn Sa‘d ibn Manī‘ al-Baṣrī al-Hāshimī or simply Ibn Saʿ'd (Arabic: ابن سعد) and nicknamed "Scribe of Waqidi" (Katib al-Waqidi), was a scholar and Arabian biographer. Ibn Sa'd was born in 784/785 CE (168 AH) and died on 16 February 845 CE (230 AH). Ibn Sa'd was from Basra, but lived mostly in Baghdad, hence the nisba al-Basri and al-Baghdadi respectively. He is said to have died at the age of 62 in Baghdad and was buried in the cemetery of the Syrian gate.
The Kitāb aṭ-ṭabaqāt al-kabīr in Arabic (translation: The Book of the Major Classes), is a compendium of biographical information about famous Islamic personalities. This eight-volume work contains the lives of Muhammad, his Companions and Helpers, including those who fought at the Battle of Badr as a special class, and of the following generation, the Followers, who received their traditions from the Companions. Ibn Sa'd's authorship of this work is attested in a postscript to the book added by a later writer. In this notice he is described as a "client of al-Husayn ibn ‘Abdullah of the ‘Abbasid family".
Volumes 1 and 2 (of the Sachau ion) were translated in 1967 and 1972, respectively, by S. Moninul Haq, Pakistan Historical Society. Ibn Sa'd's Kitab Al-Tabaqat Al-Kabir Vols. 1&2. ISBN81-7151-127-9
Abridged translations of Volumes 3, 6, 7 and 8 have been translated by Aisha Bewley and published under the titles of The Companions of Badr, The Men of Madina, The Scholars of Kufa and The Women of Madina.
A six volume translation Biographien Muhammeds, seiner Gefahrten und der spateren Trager des Islams bis zum Jahre 230 der Flucht was translated by Eduard Sachau and Julius Lippert.