Narrated `Aisha: (the wife of the Prophet) The Prophet used to practice I`tikaf in the last ten days of Ramadan till he died and then his wives used to practice I`tikaf after him.
Hadith ReferenceSahih Bukhari / The Book of Itikaf / Hadith: 2026
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة