How sweet of him! My mom is like that too. Several years back, when the transmission blew unexpectadly on my car, she sent me a very generous check, enough to pay 1/3 of the cost to replace it, which was several thousand dollars.
And I just bought a new used car, and she again, sent me a check to "help out" with the down payment etc. I don't ask, but am very grateful, and always appreciate when she does that. So now that I'm a bit better off, I will sometimes send her stuff "just because" books for her Kindle, and so on, which she still "yells" at me for and tells me its not necesary.