Legal right to stock new bedding (5)
I believe the answer is:
linen
'bedding' is the definition.
(I've seen this before)
'legal right to stock new' is the wordplay.
'legal right' becomes 'lien' (legal term).
'to stock' is an insertion indicator (some letters contain or stock others).
'new' becomes 'n' (abbreviation as in New Testament NT).
'lien' going around 'n' is 'LINEN'.
(Other definitions for linen that I've seen before include "fabricated? This is" , "bedclothes perhaps" , "Underclothing" , "E.g. bedclothes" , "Holland, say" .)