I asked permission to enter upon the Prophet ﷺ, and he asked, "Who is this?"I answered, "It is I."The Prophet ﷺ said, "I, I?"
حدثنا أبو بكر بن أبي شيبة حدثنا وكيع عن شعبة عن محمد بن المنكدر
استأذنت على النبي ﷺ فقال من هذا فقلت أنا فقال النبي ﷺ أنا أنا
No references are available.
Bukhari narrated it in the Book of Seeking Permission, Chapter, "If he said, Who is this? and he replied, It is I," no. 6250, from the hadith of Shuba, through this same route, and Muslim narrated it in the Book of Manners, Chapter on the dislike of the one seeking permission saying "It is I" when asked "Who is this?", no. 2155/39, from Ibn Abu Shayba, through this same route.