take it from me

Also, you can take it from me. Rest assured, believe me, as in You can take it from me, we've been working hard on it. This idiom was first recorded in 1622 in slightly different form, take it upon my word. The current form appeared in 1672.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.