https://memory-alpha.fandom.com/wiki/Rules_of_Acquisition

Rules of Acquisition
The Rules of Acquisition were the sacred precepts upon which all Ferengi society was based. They were first written by Gint, the first Grand Nagus. In theory, "[e]very Ferengi business transaction is governed by [these rules] to ensure a fair and honest deal for all parties concerned." (DS9: "The Maquis, Part I") By the mid-22nd century there were 173 rules (ENT: "Acquisition"); by the 2370s there were 285. (DS9: "Rules of Acquisition", "Body Parts"; VOY: "False Profits"); and supposedly 289...
