The Islamic equivalent of kosher (5)
I believe the answer is:
halal
'the islamic equivalent of kosher' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for halal that I've seen before include "Meat fit for Muslims" , "which food is legal in Mecca" , "authorised food" , "Meat prepared for Muslims" , "(Of meat) suitable for Muslims" .)