trouble (one) for (something)
To request that one gives or passes something. Excuse me, could I trouble you for some spare change? I'm a bit short for my bus fare. Don't be afraid to trouble your team for progress reports—you've got to stay on top of production, after all!
trouble someone for something
to ask someone to pass something or give something. (Usually a question.) Could I trouble you for the salt? Could I trouble you for some advice?
trouble someone for
Politely ask for something, as in May I trouble you for a drink of water? This idiom uses trouble in the sense of "disturb." [Mid-1800s]