Brought up in Sharia law in refuge (4)
I believe the answer is:
lair
'refuge' is the definition.
(I've seen this in another clue)
'brought up in sharia law' is the wordplay.
'brought up' is a reversal indicator (in a down clue, letters go up).
'in' says the answer is hidden in the clue.
'rial' can be found hidden inside 'sharia law'.
'rial' written backwards gives 'LAIR'.
'in' is the link.
(Other definitions for lair that I've seen before include "Wild animal's place of refuge" , "Rail around hiding-place" , "Place of seclusion (informal)" , "Waylay" , "Den of a wild animal" .)