You must get time to be still (3)
I believe the answer is:
yet
'still' is the definition.
(yet can mean still or so far)
'you must get time' is the wordplay.
'you' becomes 'ye' (historical version of 'you').
'must get' is a charade indicator (letters next to each other).
'time' becomes 't' (abbreviation).
'ye'+'t'='YET'
'to be' is the link.
(Other definitions for yet that I've seen before include "Still; nevertheless" , "Although" , "Still, so far" , "Up to the present time" , "Though; still" .)