Sahih al-Bukhari, Volume 1, Book 11, Hadith 694 (USC-MSA) ⓘ
Narrated Anas bin Malik: One night an orphan and I offered the prayers behind the Prophet in my house and my mother (Um Sulaim) was standing behind us (by herself forming a row).
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ إِسْحَاقَ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ صَلَّيْتُ أَنَا وَيَتِيمٌ، فِي بَيْتِنَا خَلْفَ النَّبِيِّ صلى الله عليه وسلم وَأُمِّي أُمُّ سُلَيْمٍ خَلْفَنَا.
also referenced under: Book 10, Hadith 121 (In-Book) & Hadith 727 (DarusSalam)