What does the verse teach?
Rashi: Daniel was in his grandeur in Bavel until the first year of Koresh ha'Melech 1 .
Ibn Ezra: He was in Bavel until the first year of Koresh. Had it written Ad Shanah Achas, it would imply that a full year passed. Shanah Achas implies in his first year.
Malbim: Until that time he was in the Chatzer of the kings. After he was thrown to the lions' den, he was exempted from his work and fixed his residence in Shushan, like Mahari said in the name of Yosifun.
Rashi: According to the opinion that Daniel is called Hasach because Chatchuhu (they cut him off) from his grandeur, this must refer to the first Koresh, before Achashverosh. According to the opinion that he is called Hasach because all royal matters are Nichtachin (executed) via him, Koresh is the second Daryavesh, after Achashverosh. In the days of Daryavesh ha'Midi, when they threw him to the lions' den, he did not descend from his grandeur ? "v'Daniel Denah Hatzlach b'Malchus Daryavesh uv'Malchus Koresh Parsaya." In the days of the first Koresh, he was in his grandeur.
