Possessing nothing, he'd worked on the land (4)
I believe the answer is:
hoed
'worked on the land' is the definition.
I can't tell whether this defines the answer.
'possessing nothing he'd' is the wordplay.
'possessing' is an insertion indicator.
'nothing' becomes 'O' (O resembles 0).
'o' put into 'hed' is 'HOED'.
Can you help me to learn more?
(Other definitions for hoed that I've seen before include "Tended to soil" , "Weeded" .)