Code of Organization and Civil Procedure (Cap. 12), article 82

82. Save as may be provided in regulations made under article 1004, it shall not be lawful for any advocate to fix by agreeme nt his fees in an amount higher or lower than that fixed in this Code, except when, for some particular purpose of the contending party, the action is restricted to an interest smaller than that on wh ich the decision will have a bearing; in which case only it shall be la wful for the advocate to stipulate that his fees be reckoned on the basis of the whole interest involved, or fixed at a sum higher than t hat fixed in this Code in respect o f the action as actually institu ted. Advocates not to enter into or make agreements or stipulations quotae litis.