Prince Albert's accepted in Abu Dhabi, say (5)
I believe the answer is:
halal
'abu dhabi say' is the definition.
I can't judge whether this defines the answer.
'prince albert's accepted' is the wordplay.
'prince' becomes 'hal' (Shakespearean nickname of Henry V when a prince).
'albert' becomes 'al'.
'accepted' is an insertion indicator.
'hal' going around 'al' is 'HALAL'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for halal that I've seen before include "food legally approved" , "which food is legal in Mecca" , "specially-prepared meat" , "(Of meat) suitable for Muslims" , "specially prepared type of meat" .)