Following this discussion - what do YOU think? Ought your husband have expected an offer?
I thought decent neighbors helped each other out. Never crossed my mind that money would change hands. Except if one was hired - like hiring the neighbor kid to mow the lawn. Or hiring a neighbor to do a specific job they had some expertise at.
But in terms of, “Hey neighbor, could you give me a hand?” Or “Hey neighbor, could you use a hand?” Your husband’s expectation of an offer of payment - and his expression of displeasure at not receiving one - strikes me as odd and unneighborly. Especially when your husband appears to have offered to help instead of being asked.
If you think your husband is out of line, do you anticipate ever telling him that? Cause IMO it kinda sucks that your husband has a mildly negative impression of this neighbor, when IMO the neighbor did NOTHING wrong.