go for nothing

verb

verb

To have no value, or carry no weight with someone.

Is not your friend's business your own business? What does friendship mean if it is not so? And when I tell you that it is my business, mine of right, does that go for nothing with you?1867, Anthony Trollope, The Last Chronicle of Barset:
And I tell you they are promises that go for nothing.1926, Alessandro Manzoni, The Betrothed (I Promessi Sposi), page 333:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.