(36) باب إِذَا نَذَرَ ثُمَّ أَسْلَمَ قَبْلَ أَنْ يَفِيَ
It was narrated that Ibn 'Umar said:
"Umar had made a vow to spend a night in 'Itikaf in Al-Masjid Al-Haram. He asked the Messenger of Allah about that, and he ordered him to perform the 'Itikaf." (DE)
Reference (DE): Sunan an-Nasa'i 3821 (DE)
In-book reference (DE): Book 35, Hadith 61 (DE)
English translation (DE): Vol. 4, Book 35, Hadith 3852 (DE)