Materials for the history of the text of the Qurʾān : the old codices. The Kitāb al-Maṣāḥif of Ibn Abī Dawūd ; together with a collection of the variant readings from the codices of Ibn Maʿsūd, Ubai, ʿAlī, Ibn ʿAbbās, Anas, Abū Mūsā and other early Qurʾānic authorities which present a type of text anterior to that of the canonical text of ʿUthmān - Sijistānī, ʿAbd Allāh ibn Sulaymān, 845-928 or 929 (Brill, 1936)