Volume 3, Book 33, Number 259:
Narrated Ibn ‘Umar:
that ‘Umar had vowed in the Pre-lslamic period to perform Itikaf in Al-Masjid-al-Haram. (A sub-
narrator thinks that ‘Umar vowed to perform Itikaf for one night.) Allah’s Apostle said to ‘Umar, “Ful –
fill your vow.”