(11) باب مَا جَاءَ فِي وَفَاءِ النَّذْرِ
Narrated 'Umar:
"I said:'O Messenger of Allah! I had vowed to perform I'tikaf in Al-Masjid Al-Haram for a night during the era of Jahiliyyah.' He said: 'Fulfill your vow.''" (ID)
Reference (ID): Jami` at-Tirmidhi 1539 (ID)
In-book reference (ID): Book 20, Hadith 18 (ID)
English translation (ID): Vol. 2, Book 18, Hadith 1539 (ID)