In this meeting, we saw the Ran raises the question of why Moshe had a speech impediment if a navi is supposed to be perfect — wealthy, healthy, wise and modest. We detoured into a discussion of these four kinds of discussion as understood by Ben Zoma (which the Ran specifically says does not apply here) and the Rambam.

The text is available with footnotes containing the text of the mishnah and the Rambam we discussed at https://www.aishdas.org/kloiz/Derashos-haRan-derashah-3.pdf (starting at ¶ 4).

Or on Sefaria, beginning at https://www.sefaria.org/Derashot_HaRan.3.4

Derashos haRan is an explanation of the fundamentals of the Torah as explicated from texts in the Chumash. In the third derashah, the Ran discusses Moshe, Aharon, the nature of nevu’ah, Moshe’s special kind of nevu’ah,, the urim vetumim, and the first mitzvos given to the ewish People — counting months from Nissan and of Pesach.