stump up
verb- Jim stumped up for the cinema tickets, but I paid for the coffees afterwards.
- Not least because last spring, Chancellor Rishi Sunak announced that HM Treasury's new northern base would be in Darlington. If that doesn't encourage the Treasury to stump up cash to upgrade the town's station, then I fear nothing will.2021 June 30, Philip Haigh, “Regional trains squeezed as ECML congestion heads north”, in RAIL, number 934, page 53: