Hold by - Idioms by The Free Dictionary
hold someone or something by something
to grasp someone or something by a particular part. I held him by the shoulder while I talked to him. Donna held the dog by the collar.
hold by something
to stick by a promise. I hope that you will hold by our agreement. I will hold by everything I said.
References in classic literature
This seems to me, sir, as a man-rope; something that weak souls may hold by
Automated management of Legal Hold Notices: Orchestria Legal Hold enables legal counsel to notify relevant custodians of a hold by
means of an automatic electronic notification displayed on each custodian's computer screen.