I was at Shushan; in his mind and thoughts, not bodily, and was by the river Ulai: some think he was locally there, being sent thither in embassy by Cyrus; but Daniel was now at Babylon, when it was besieged and taken, Da 5; he was only there in spirit, as the prophet Ezekiel saith he was in Jerusalem, Ezekiel 8:3. Now Daniel had this vision at Shushan, because their deliverance was to come by Cyrus the Persian or Elamite, for Elam is Persia. This city was called Shushan, i.e. a lily, for the pleasantness of it: such names they give also their cities in China. The river of Ulai; a river whose waters were so wholesome that they were carried far, and the king drank of no other.
Related Commentaries of Daniel 8:2
Daniel 8:2
2 And I saw in a vision; and it came to pass, when I saw, that I was at Shushan in the palace, which is in the province of Elam; and I saw in a vision, and I was by the river of Ulai.