Cựu luật 

Ancient religious law. Caodaism maintains the religious law in the First and Second Amnesty are old fashioned. The present Third Amnesty's Law fits current human spiritual level, which is Caodai Canonical Laws.

Thánh Ngôn Hiệp Tuyển : Chẳng phải Thầy còn buộc theo Cựu luật, song luật ấy rất nên quí báu, không giữ chẳng hề thành Tiên, Phật đặng. 

The Collection of Divine Messages : I (God) do not want to impose the ancient religious law on you disciples, but it is still so precious that you cannot become Buddhas without observing it.