The person said, What shall I do with the baby of a camel Oâ€™ Messenger of Allah? (I want one for a conveyance). Rasoolullah sallallahu alaihe wasallam replied, Every camel is the baby of a camel.
The person thought that he would be given a small camel which is unfit for riding. In this hadith besides joking, it also points to the fact that a person should carefully listen and understand what the other person is saying.