Musannaf Ibn Abi Shayba 22:377

Abu Mu’awiyah narrated to us, from al-A’mash, from Abu Zibyan, from Ibn Abbas, that the Messenger of Allah (may Allah bless him and grant him peace) used to present the Quran once every Ramadan, except for the year in which he was taken [in death], for it was presented to him twice in the presence of Abdullah [ibn Mas’ud]. So he witnessed what was abrogated of it and what was replaced.