All right,I am a nurse for one sick with passion,
But when it is clear that he will not recover,then what cure of the Messiah,Messiah's cure is useless.
(Mirza Ghalib says,I will become the nurse of those sick with passion,and take responsibility for overseeing their medicine etc.But first this ought to be decided,if the one sick with passion does not recover,if not even the medicine of union causes his disease of passion to abate,then what punishment should be devised for the Messiah the beloved.)
(Ghalib's claim is that the disease of passion can not be cured at all.)
(If it is not done,then what cure for you.)
(What an excellent witty.)