What did Anas (peace be upon him) reveal about the Qur'an being collected in the lifetime of the Prophet Muhammad (saw) ?
 Narrated Qatada:                     Anas said, "The Qur'an was collected in the lifetime of the Prophet by four (men), all of whom were from the Ansar: Ubai, Mu`adh bin Jabal, Abu Zaid and Zaid bin Thabit." I asked Anas, "Who is Abu Zaid?" He said, "One of my uncles."