Ask?

The first is not correct; the second is.

Both are grammatical but the second one makes sense.

Ask QuestionsShould I add "for" preposition to second sentence?

In that context, yes.

When you request something form somebody, ask is followed by for. When you ask someone a question, no preposition is used.
Now tell me if money is a question or a kind of request.

Persian LearnerBoth are grammatical

The first is not grammatical.

fivejedjonThe first is not grammatical.

For all practical purposes I agree with you. However, "Did you ask your father the way to the apartment?", for instance, is grammatical, and "the way to the apartment" and "some money" are both noun phrases. Therefore, one might be able to argue that "Did you ask your father some money?" fails because of a semantic misma

It's not to do with 'some money'; it's do do with the difference between ask (speak to to obtain information) and ask for (request).

fivejedjonIt's not to do with 'some money'; it's do do with the difference between ask (speak to to obtain information) and ask for (request).

I believe that we interpret it like this because "some money" dominates our understanding of the intended meaning, over the difference between "ask" and "ask for". In a "semantically blind" analysis, in my opinion it is