Three is the limit — if it fails this time too, just give up.
Tips
history
Recorded in 《西游记》 (Journey to the West), chapter 27: 常言道:‘事不过三’ — 'as the saying goes, a thing should not happen more than three times.' Used to set a final-warning tone before withdrawing patience.
usage
Often spoken as a half-warning — the speaker is signaling that they've reached the limit of their tolerance after two prior failures or offences.