مختصر صحيح بخاري
Mukhtasar Sahih Bukhari
Book of I'tikaf (Seclusion)
I'tikaf in the middle ten days of Ramadan is also reported.
Narrated Abu Huraira (may Allah be pleased with him): The Prophet (peace and blessings of Allah be upon him) used to observe I'tikaf for ten days in every Ramadan, but when the year of his death came, he observed I'tikaf for twenty days.
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