Study covers abode in the sky, time for disagreement (7)
I believe the answer is:
dissent
'disagreement' is the definition.
(dissent is a kind of disagreement)
'study covers abode in the sky time' is the wordplay.
'study' becomes 'den' (term for a study or office).
'covers' means one lot of letters goes inside another.
'abode in the sky' becomes 'iss' (I can't justify this - if you can you should believe this answer much more).
'time' becomes 't' (abbreviation).
'den' enclosing 'iss' is 'dissen'.
'dissen'+'t'='DISSENT'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for dissent that I've seen before include "Dispute" , "Raise objections" , "Object" , "Not agree" , "Open disagreement" .)