I have heard that on one occasion the Blessed One was journeying along
a road in the Kosalan country with Ven. Nāgasamāla as his junior
companion. Ven. Nāgasamāla, while going along the road, saw a fork in
the path. On seeing it, he said to the Blessed One, "That, lord
Blessed One, is the route. We go that way." When this was said, the
Blessed One said, "This, Nāgasamāla, is the route. We go this way."
A second time... A third time, Ven. Nāgasamāla said to the Blessed
One, "That, lord Blessed One, is the route. We go that way." And for a
third time, the Blessed One said, "This, Nāgasamāla, is the route. We
go this way."
Then Ven. Nāgasamāla, placing the Blessed One's bowl & robes right
there on the ground, left, saying, "This, lord Blessed One, is the
bowl & robes."
Then as Ven. Nāgasamāla was going along that route, thieves — jumping
out in the middle of the road — pummeled him with their fists & feet,
broke his bowl, and ripped his outer robe to shreds.
So Ven. Nāgasamāla — with his bowl broken, his outer robe ripped to
shreds — went to the Blessed One and, on arrival, bowed down to him
and sat to one side. As he was sitting there he said to the Blessed
One, "Just now, lord, as I was going along that route, thieves jumped
out in the middle of the road, pummeled me with their fists & feet,
broke my bowl, and ripped my outer robe to shreds."
Then, on realizing the significance of that, the Blessed One on that
occasion exclaimed:
When traveling together,
mixed together
with a person who doesn't know,
an attainer-of-wisdom,
on realizing that the person is evil,
abandons him
as a milk-feeding heron,
a bog.
Ud 8.7