To pay for something, spend or donate money
burn a hole in someone's pocket
To cause someone to spend money or be tempted to spend money.
push the boat out
To do something, especially spend money, more extravagantly than usual…
hand over
To relinquish control or possession of something to someone.
fork over
To pay, give up or hand over a large amount of money.
hand down
To donate (as second hand.)
wave of the hand
A simple gesture, as used for greeting, command, dismissal, or summoni…