Narrated Ibn Az-Zubair:
I said to ‘Uthman bin ‘Affan (while he was collecting the Qur’an) regarding the Verse:– “Those of you who die and leave wives …” (2.240) “This Verse was abrogated by an other Verse. So why should you write it? (Or leave it in the Qur’an)?” ‘Uthman said. “O son of my brother! I will not shift anything of it from its place.”
Sahih Bukhari, Volume 6, Book60, Number 53