Furnished for a certain period, religiously (4)

I believe the answer is:

lent

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'furnished' is the definition.
(I've seen this in another clue)

I can't explain the rest of the clue.

(Other definitions for lent that I've seen before include "Period of penance" , "Time of fasting" , "Provided loans" , "Forty days of fasting" , "Fast time" .)

I've seen this clue in the Evening Standard.

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