It was narrated that jabir said A slave came and pledged to the Prophet to emigrate, and the Prophet did not realize that he was a slave. Then his master came looking for him. The Prophet said: 'Sell him to me,' and he bought him for two black slaves. Then he did not accept the pledge from anyone until he asked: 'Is he a slave?"' [ sunan an-nasai 4184 ]
Please somebody tell me the name/identity of this slave who pledged to the prophet
