The composition of the annexation is what is formed from two words, the first of which is called annexed (mudhaf), and the second is called post fixed (mudhaf ilayh). It is a ratio between two nouns to estimate a preposition between them. The composition of the annexation is in the nominative sentence and the verbal sentence alike.It is also possible to distinguish this structure and know the annexed and the post fixed through the meaning. Both names are related to each other in terms of meaning, one cannot be cut off from the other, as if there is a hidden link between them that does not appear. Therefore, it is possible to let something between the annexed and the post fixed so that this meaning is not separated from them.The post fixed is expressed according to its position in the sentence. It may be a subject, an object, a subject of a nominal sentence (mubtada), a predicate of a nominal sentence (khabar), a noun (isim) or a a predicate (khabar) for (inna), and so on. And when expressing it, we add a sentence to the parsing (wa howa mudhaf) i.e. (and it is annexed). As for the post fixed, it is always dative, regardless of the location of the annexed in the sentence. The post fixed has only one position in the sentence, whatever its type.