trust (one) for (something)
trust (one) for (something)
To have faith or confidence that one will return something that one has borrowed, especially money. You're asking me for a lot of money, Jim. Can I trust you for it? She's borrowed money from time to time, but I've always been able to trust her for it.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
trust someone for something
to depend on someone for payment for something. I will lend you one hundred dollars. I know I can trust you for it. I loaned Ted a lot of money. It's all right. I can trust him for it.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.