Musannaf Ibn Abi Shayba 3:1313

Hashim narrated to us, he said: Mansur informed us, from Ibn Sirin, that Na'ilah bint al-Farafisah al-Kalbiyyah said when they entered upon Uthman and killed him: "Whether you kill him or leave him, he used to enliven the night with a single rak'ah in which he would recite the entire Quran."