Original sentence: Ibn Ishaq does not name his sources for this claim; al-Waqidi mentions two sources: Ka’b ibn Malik of Salima, a clan hostile to the Jews, and Mummad ibn Ka’b, the son of a Qurayza boy, who was sold into slavery after the punishment of the Qurayza men and subsequently became a Muslim.Norman Stillman furthermore argued that the Muslim historians had invented this agreement in order to justify the later punishment of the Qurayza men and the enslavement of their women and children.The punishment of the Banu Qurayza became the subject of Shaul Tchernichovsky's Hebrew poem Ha-aharon li-Venei Kuraita (The Last of the Banu Qurayza)
Edited sentence: Ibn Ishaq does not name his sources for this claim; al-Waqidi mentions two sources: Ka’b ibn Malik of Salima, a clan hostile to the Jews, and Mummad ibn Ka’b, the son of a Qurayza boy, who was sold into slavery after the massacre of the Qurayza men and subsequently became a Muslim.Norman Stillman furthermore argued that the Muslim historians had invented this agreement in order to justify the later massacre of the Qurayza men and the enslavement of their women and children.The massacre of the Banu Qurayza became the subject of Shaul Tchernichovsky's Hebrew poem Ha-aharon li-Venei Kuraita (The Last of the Banu Qurayza)