On the other hand, M. Momen states that: With regards to the question of the text of the Qur'an, it has already been noted that the early Shi'is believed that the Qur'an has been altered and parts of it has been suppressed.
مؤمن: فيما يتعلق بمسألة نص القرآن ، فقد لوحظ بالفعل أن الشيعة الأوائل يعتقدون أن القرآن قد تم تغييره وأن أجزاء منه قد حذفت.