When did they stop eating the Manna?
Rashi writes that they stopped eating the Manna on the 15th of Nisan. Bearing in mind that the Manna began to fall on the fifteenth of Iyar (one month after they left Egypt), how can the Torah state that they ate the Manna for forty years?
Rashi: This teaches us that the 'cakes' that they took out of Egypt (and which they ate from the fifteenth of Nisan until the fifteenth of Iyar) tasted like Manna.
What is the Torah referring to when it writes that they ate the Manna until they came to inhabited country?
Rashi: It means that the Manna stopped falling when they were in the land of Sichon and Og on the banks of the River Yarden, when Moshe died. 1
Seforno: When the Pasuk says that the B'nei Yisrael ate the Manna for forty years, it means that they ate only the Manna and no other food. That lasted, the Pasuk is now telling us, until they arrived at inhabited country - the land of Sichon and Og, when they began to eat of the local bread as well. 2
Rashi writes that they stopped eating the Manna on the 15th of Nisan. How can he also say that the Manna stopped when they were in Eretz Sichon and Og, when Moshe died?