… time I linked with a beautiful young woman (5)
I believe the answer is:
'a beautiful young woman' is the definition.
(young woman in Muslim paradise)
'time i linked with' is the wordplay.
'time' becomes 'hour' (hour is a kind of time).
'linked with' says to put letters next to each other.
(Other definitions for houri that I've seen before include "Girl in Muslim paradise" , "Alluring female" , "Young beautiful woman of the Moslem Paradise" , "Alluring woman or nymph in Muslim paradise" , "Paradisal nymph" .)