for somebody's benefit
for (one's) benefit
Largely (or solely) to help one. I hope you're not doing that for my benefit—I don't really have a preference at all. I only said that for your sister's benefit, so she won't worry. Honestly, I don't expect this situation to get better any time soon.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
for somebody’s ˈbenefitespecially in order to help or be useful to somebody: There’s no need to repeat everything for my benefit. ♢ I have produced some notes for the benefit of those people who weren’t at the meeting.
Farlex Partner Idioms Dictionary © Farlex 2017