Who says?

Who says?

According to whose authority? A: "You can't just take money from the register like that!" B: "Who says? I own the business, so it's technically my money." Who says I can't take another holiday already? I have the days to take, and it doesn't conflict with anyone else in the office.
See also: who
Farlex Dictionary of Idioms.

who ˈsays (...)?

(spoken) used to disagree with a statement or an opinion: Who says I can’t do it?
See also: who
Farlex Partner Idioms Dictionary
See also:
  • color of someone's money, see the
  • funny money
  • come into (some) money
  • come into money
  • be (right) on the money
  • be pushed for money
  • for a while
  • be pressed for money
  • be pressed/pushed for money, space, time, etc.
  • cash money