Apprehended for the bed, say (6)
I believe the answer is:
caught
'apprehended' is the definition.
(to apprehend is to catch or arrest)
'the bed say' is the wordplay.
'the bed' becomes 'cot' (cot is a kind of bed).
'say' indicates a 'sounds like' (homophone) clue.
'cot' sounds like 'CAUGHT'.
'for' acts as a link.
(Other definitions for caught that I've seen before include "Overtaken - in the act?" , "Nabbed" , "report" , "Trapped or captured" , "Got" .)