Insightful lecture delivered by Saeed Rhaana al-Maghribi on the topic of the diligence of the Companions of the Messenger of Allaah, sallallaahu 'alayhi wa sallam, to preserve the Qur'aan for the Muslim Ummah. This concluding lecture covers the compilation of the Qur'aan during the lifetime of Uthmaan ibn Affaan, radyallaahu anhu. Lecture material based on the academic curriculum of Muhammad ibn Saud University (Riyaadh, Saudi Arabia). Recorded Sha'baan 19th, 1436 (June 7th, 2015) at the Islamic Center of Palm Beach, (Florida, USA).