As for meanings, it is to know that things are of two types: singulars and composites, and that knowledge of the singular takes precedence over knowledge of the composite, and knowledge of the singular is limited to definition, and knowledge of the composite is limited to proof. If you want to know the existence of the world, whether it is due to a cause or not, then turn to singulars or what is in a ruling. Singulars are like the conditional premise, then you make one of the singulars a subject as a subject and assign the other singular to it in the way of reporting it about it, so you say every event, this noun is a subject, because it is the one you started with, and a first subject, because it is the first subject that you placed on it to predicate what you tell about it, and it is singular, so the genitive noun is in the singular ruling. You must know, by definition, the meaning of occurrence and the meaning of all that you added to it and made it like a wall for what surroun