Escape punishment and go to sleep (3,3)
I believe the answer is:
get off
I believe this is a double definition.
'escape punishment' is the first definition.
(I've seen this in another clue)
'go to sleep' is the second definition.
(I've seen this before)
'and' acts as a link.
(Other definitions for get off that I've seen before include "Escape all punishment" , "shed" , "Start to sleep" , "Dismount from or begin a journey" , "Disembark" .)