cambridge.org:
(1) I called them to ask for more details. — correct
(2) I called them to ask more details. — incorrect
Is (2) really incorrect?
Is "to ask details" (without "for") always incorrect?
If not, in what cases "to ask details" is incorrect and in what is correct?
For example (my own examples):
(3) You need to ask him for some details about the upcoming meeting.
(4) You need to ask him some details about the upcoming meeting.
Which of (3) and (4) is correct and which is not?