Sunan Ibn Majah

It was narrated that Abu Taiyah said:""I heard Anas Bin Malik say: The Messenger of Allah (ﷺ) 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)