Al-Adab Al-Mufrad, Book 34, Hadith 25 (In-Book) ⓘ
'Umar ibn al-Khattab said, "When the Prophet, may Allah bless him and grant him peace, withdrew from his wives, I was with Rabah, the slave of the Messenger of Allah, may Allah bless him and grant him peace, and I called, 'Rabah, ask permission for me to come in to the Messenger of Allah, may Allah bless him and grant him peace.'"
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ: حَدَّثَنَا عُمَرُ بْنُ يُونُسَ بْنِ الْقَاسِمِ، قَالَ: حَدَّثَنَا عِكْرِمَةُ، عَنْ سِمَاكٍ أَبِي زُمَيْلٍ قَالَ: حَدَّثَنِي عَبْدُ اللهِ بْنُ عَبَّاسٍ قَالَ: حَدَّثَنِي عُمَرُ بْنُ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ قَالَ: لَمَّا اعْتَزَلَ النَّبِيُّ صلى الله عليه وسلم نِسَاءَهُ، فَإِذَا أَنَا بِرَبَاحٍ غُلاَمِ رَسُولِ اللهِ صلى الله عليه وسلم، فَنَادَيْتُ: يَا رَبَاحُ، اسْتَأْذِنْ لِي عَلَى رَسُولِ اللهِ صلى الله عليه وسلم.
also referenced under: Hadith 835 (Reference) & Book 34, Hadith 835 (English)