lay at feet

lay something at someone's feet

 and put something at someone's feet 
1. Lit. to place something on the ground in front of someone. The cat came up to me and laid a mouse at my feet. The dog put a rabbit at my feet.
2. Fig. to hold someone responsible for something. I am going to lay this matter at your feet. You are clearly to blame. I will put this matter at your feet. It is your fault.
See also: feet, lay