It was narrated from 'Abdullah bin Mas'ud that:
Abu Bakr and 'Umar gave him the glad tidings that the Messenger of Allah had said: "Whoever would like to recite the Qur'an as fresh as when it was revealed, let him recite it like Ibn Umm 'Abd.'" (ID)
English reference (ID): Vol. 1, Book 1, Hadith 138 (ID)
Arabic reference (ID): Book 1, Hadith 143 (ID)