Sunan Ibn Majah, Volume 5, Book 33, Hadith 3720 (DarusSalam) ⓘ
It was narrated that Abu Taiyah said: "I heard Anas Bin Malik say: The Messenger of Allah used to mix with us so much that he said to a little brother of mine: "O Abu `Umair, what happened to the Nughair (one of the narrators Waki` said that it means a bird that he used to play with)."
حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ شُعْبَةَ، عَنْ أَبِي التَّيَّاحِ، قَالَ سَمِعْتُ أَنَسَ بْنَ مَالِكٍ، يَقُولُ كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ يُخَالِطُنَا حَتَّى يَقُولَ لأَخٍ لِي صَغِيرٍ " يَا أَبَا عُمَيْرٍ مَا فَعَلَ النُّغَيْرُ " . قَالَ وَكِيعٌ يَعْنِي طَيْرًا كَانَ يَلْعَبُ بِهِ .
also referenced under: Hadith 3720 (Reference) & Book 33, Hadith 65 (In-Book)