Assumptions and wrong impacts

Duryodhana was fuming that he was receiving reports from Rishis that Pandavas are worthy prince, the hospitality was outstanding. Unable to digest this Duryodhana performs Abhichara Homam, a yagna conducted to remove oppositions or enemies. He approached various Sages and finally Kalamamuni agreed to perform after a long press by Duryodhana and Sakuni.
During the yagna a huge monster appeared and asked the directions and the latitude and longitudes and what was it supposed to do. But the monster had given a warning in case of unsuccessful mission it will kill Kalamamuni. The task was to kill all 5 of them.
Scene shifts to Forest. A kid claimed that his Yagna laddle was stolen by a deer. Pandavas agree to help the kid, chasing the deer, both the deer and kid disappeared. Due to a heavy chase all were damn thirsty. So all decide to quench their thirst. An audible voice had warned not to drink, here is where I felt the ignoring assumptions. All assumed that nothing would happen and drank the water and died.
Seeing this Dharma swooned down as all four had fell down.
Now the monster arrived and the location matched and identities also matched unfortunately the monster also assumed that all 5 were dead, but the fact was Dharma was alive
This is second assumption.
The lesson is that invest a bit little extra time before jumping to conclusions.