Majmūʻat al-wathāʾiq al-siyāsīyah lil-ʻahd al-nabawī wa-al-khilāfah al-rāshidah - Hamidullah, Muhammad, (Maṭbaʻat Lajnat al-Taʾlīf wa-al-Tarjamah wa-al-Nashr, 1956)