Steals a great amount, pocketing nothing (5)

'steals' is the definition.
(looting is a kind of stealing)

'a great amount pocketing nothing' is the wordplay.
I cannot quite see how this works, but
'amount' could be 't' (T is an example) and 't' is located in the answer.
'nothing' could be 'o' (looks like zero - 0) and 'o' is present in the answer.
The remaining letters 'los' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?