lex caecilia didia - Reyep
the law of caecia didia ; In 98 BC, a Roman jurist created the following rule:

“It is forbidden to include subjects that are not closely related to each other in the same draft law. In this way, the proposals that are believed to be accepted by the public cannot be included in the same bill together with the proposals that are certain to be rejected if voted alone."
Lex Caecilia Didia, one of the important laws of Roman law, was founded in BC. It was enacted in Rome in 98 by the consuls Caecellius Metellus Nepos and Titus Didius.

The law consists of two articles. The first clause specifies the minimum amount of time required for a law to be announced and voted on.

The expression trinundum, which is used in the article and determines the duration, is met with two different interpretations today.

According to first sighters, the word trinundum means a period of 24 days, and according to second sighters, 17 days.

The second article of the law is clear enough to leave no room for discussion: “People cannot be compelled to come to a conclusion about different issues gathered in one complex law.” In other words, the second article of the law stipulates that it is not correct to gather different subjects in a single law and that they should be enacted by separate laws. In this way, people are not forced to accept what they don't like in order not to lose what they like about different subjects gathered in a single law.

I think the second one ie more important.