classic waka stream

わすれても汲みやしつらん旅人の
高野の奥の玉川の水
Roma-ji

Wasurete mo kumi ya shitsuran tabibito no
Kōya no oku no Tamagawa no mizu

English Translation
Even if forgot,
will a traveler draw and drink
from Tamagawa—
in the depths of Mount Kōya,
these waters of Tamagawa?
Meaning
I fear that a traveler, forgetting the poison said to be in this stream, might draw and drink from it—the waters of Tamagawa in the depths of Mount Kōya.
Commentary
Volume Three, Butsuhōsō.

This poem is said to have been composed by Kōbō Daishi. It may be taken as an expression of the Great Master’s compassionate concern for the fate of travelers.

The parent and child, Yumenen and his son, who had been chanting sutras through the night on Mount Kōya, encountered the party of Kanpaku Hideitsugu.
Author
Ueda Akinari
Source
Ugetsu Monogatari
Other