Put on the ground, perhaps, as specified (4,4)
I believe the answer is:
laid down
'specified' is the definition.
(I've seen this before)
'put on the ground perhaps' is the wordplay.
'put' becomes 'laid' (I've seen this before).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'the ground perhaps' becomes 'down' (I am not sure about this - if you are sure you should believe this answer much more).
'laid'+'down'='LAID DOWN'
'as' acts as a link.
Can you help me to learn more?
(Other definitions for laid down that I've seen before include "Ordained" , "Insisted upon - abandoned" , "specified" , "Stipulated - deposited" .)