Musannaf Ibn Abi Shaybah 7054 — What is recited in witr

Abd al-Malik bin Umayr said that Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) used to pray three rak'ahs of witr, and in each rak'ah he would recite any three surahs from the end of the Mufassal, according to the arrangement of Abdullah's (own) mushaf.