Комментарий о цитате к Берешит 2:10

All other rivers are not referred to as יאורים except for the Nile... Rashi is answering the question: Why is it written היאור, with a definite article? [The answer is:] Perforce it refers to the known יאור, mentioned earlier — the four נהרות written in Bereishis (2:11). Accordingly, why is it not written נהר here, like it does there? Surely [the answer is:] If it was written נהר here, we would not know which נהר, as four נהרות were mentioned earlier. Thus it says יאור, meaning the נהר that has יאורים. And all other נהרות are not called יאורים, only the Nile, as Rashi goes on to explain. The Nile is the Pishon River mentioned in Bereishis, as Rashi explains there. When Rashi says, “All other rivers,” he is referring to the other three נהרות written in Bereishis.

the river of Paradise.

[Ps. 104:10–11]: “He sends forth springs in the river-beds; they run between the mountains, giving drink to all the beasts of the field”: This refers to the well-known “beast,” the one who is also called “garden,” of which it says: “A river flows forth from Eden to water the garden” [Gen. 2:10].