Kitāb al-gharībayn, gharībay al-Qurʼān wa-al-ḥadīth - Abū ʻUbayd al-Harawī, Aḥmad ibn Muḥammad, -1010 or 1011, (United Arab Republic. Majlis al-Aʻlá lil-Shuʼūn al-Islāmīyah. Lajnat Iḥyā al-Turath al-Islāmī ;, 1970)