Backstory: my dad just had unplanned surgery which will require him to be off work for 6-10 weeks. He won't have any type of income during this time.

My dad received a card in the mail today from my in-laws with cash in it. It isn't a considerable amount of cash, but it made my dad feel like a charity case and he was a bit taken back by the gesture and not sure what to do. He doesn't want to accept their money but also doesn't want to mail it back and make it even more awkward.

My husband and I have VERY differing opinions on this matter. I'm curious to read what others think of the situation.