Saving rupees, bed down in rubbish (5)
I believe the answer is:
dross
'rubbish' is the definition.
(I've seen this before)
'saving rupees bed down' is the wordplay.
'saving' indicates putting letters inside.
'rupees' becomes 'r' (abbreviation for rupees).
'bed down' becomes 'doss' (dossing is a kind of bedding down).
'r' going within 'doss' is 'DROSS'.
'in' is the link.
(Other definitions for dross that I've seen before include "of no value" , "Lees" , "Worthless or dangerous material" , "Rubbish; impurities" , "Worthless stuff" .)