Sahih Bukhari
Virtues of the Quran
Volume: 006 / Book Number: 061 / Hadith Number: 520
Narrated Abu-Huraira: Gabriel used to repeat the recitation of the Qur'an with the Prophet once a year, but he repeated it twice with him in the year he died. The Prophet used to stay in I'tikaf for ten days every year (in the month of Ramadan), but