Leaving poor horse yoked into carriage (9)

'leaving' is the definition.
The definition and answer can be both to do with ownership as well as being present participle verbs.
Perhaps they are linked in a way I don't understand?

'poor horse yoked into carriage' is the wordplay.
I cannot quite see how this works, but
'horse' could be 'gg' (geegee or GG is a childish term for a horse) and 'gg' is found within the answer.
'into' could be 'in' and 'in' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?