سَمِعْت سُفْيَانَ قَالَ إِنَّهُ نَذَرَ يَعْنِي أَنْ يَعْتَكِفَ فِي الْمَسْجِدِ الْحَرَامِ فَسَأَلَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَأَمَرَهُ قِيلَ لِسُفْيَانَ عَنْ أَيُّوبَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ أَنَّ عُمَرَ نَذَرَ قَالَ نَعَمْ
مسند امام احمد بن حنبل · Hadith 4577
Sufyaan said that he made a vow to observe i'tikaaf in al-Masjid al-Haraam. He asked the Prophet (PBUH) about it, and he told him to (go ahead and) do it. Sufyaan was asked: (Was it narrated) from Ayyoob, from Naafi', from Ibn 'Umar, that 'Umar made that vow? He said: Yes
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020