As Alexander crossed the Tigris in early 323, a group of local Chaldaean philosophers met him. The story goes that they took him aside from his Companions and urged him to abandon his march:
Alexander seems to have taken this advice to heart, for he detoured to the north and approached the city from the east. The boggy terrain though made this impossible, so he was forced to enter from the west after all. Ominously, the same source as above says that this was inevitable, for the god ‘was leading him to the place where, once he entered, he was fated soon to die’.