Exodus 16:35

ארבעים שנה FORTY YEARS — But was not this period short of thirty days, since it was on the sixteenth of Iyar that the Manna fell for them for the first time and on the fifteenth of Nisan that it ceased, as it is said, (Joshua 5:12) “And the Manna ceased on the morrow”? (cf. the preceding verse which speaks of the day when they ate unleavened bread). But this tells us that in the cakes that Israel had brought out of Egypt and which they ate from the 15th of Nisan to the 16th of Iyar after they left Egypt they experienced the taste of Manna (so that the 40 years mentioned here as those during which they ate Manna may be regarded as complete) (Kiddushin 38a). אל ארץ נושבת TO A LAND INHABITED — after they had crossed the Jordan, [for that territory on the other side of the Jordan was cultivated (מְיֻשֶׁבֶת, which is regarded as the equivalent of נושבת; cf. Rashi on Genesis 36:20) and good, as it is said, (Deuteronomy 3:25) “Let me pass over, I pray thee, and see the good land that is on the other side of the Jordan”. And the translation of נושבת by Onkelos is יתבתא which means to say מיושבת, “settled”]. אל קצה ארץ כנען UNTO THE EXTREMITY OF THE LAND OF CANAAN — at the beginning of the border before they passed over the Jordan, that is, in the plains of Moab — consequently they (these two descriptions of the locality) contradict each other! But the explanation is that in the plains of Moab, when Moses died (cf. Deuteronomy 34:1) on the seventh of Adar, the Manna really ceased to fall but they had a sufficient supply from the Manna which they had gathered on that day to last until they had brought the Omer on the sixteenth of Nisan in Canaan itself, the cultivated land, as it is said, (Joshua 5:11) “And they did eat of the produce of the land on the morrow after the Passover” (Kiddushin 38a).

וּבְנֵ֣י יִשְׂרָאֵ֗ל אָֽכְל֤וּ אֶת־הַמָּן֙ אַרְבָּעִ֣ים שָׁנָ֔ה עַד־בֹּאָ֖ם אֶל־אֶ֣רֶץ נוֹשָׁ֑בֶת אֶת־הַמָּן֙ אָֽכְל֔וּ עַד־בֹּאָ֕ם אֶל־קְצֵ֖ה אֶ֥רֶץ כְּנָֽעַן׃

And the children of Yisra᾽el did eat the manna for forty years, until they came to an inhabited land; they did eat the manna, until they came to the borders of the land of Kena῾an.