leave in hands

leave (someone or something) in (one's) hands

To allow one to have control, authority, or responsibility over someone or something. We're leaving the kids in my mother-in-law's hands while we're in Barcelona. I'm getting too old to run this business anymore, Jake—I'm ready to leave it in your hands.
See also: hand, leave

leave someone or something in one's hands

Fig. to give one control of or responsibility for someone or something. You left the whole project in my hands! I have to leave the care of baby in your hands while I go to the doctor.
See also: hand, leave