Stand firm the old ring was found in the shed (4,3)
I believe the answer is:
hold out
'stand firm' is the definition.
(synonyms)
'old ring was found in the shed' is the wordplay.
I cannot really see how this works, but
an anagram of 'old' is 'ldo' which is within the answer.
'ring' could be 'o' (letter resembling a ring) and 'o' is found within the answer.
'shed' could be 'hut' (I've seen this before) and 'hut' is located in the remaining letters.
No letters remain.
This explanation may well be incorrect...
'the' is the link.
Can you help me to learn more?
(Other definitions for hold out that I've seen before include "Offer - last" , "Offer inducement or maintain resistance" , "Continue to be sufficient" , "Offer as inducement or resist capture" , "Resist (against siege)" .)