Saad - 38:42

ارْكُضْ بِرِجْلِكَ هَذَا مُغْتَسَلٌ بَارِدٌ وَشَرَابٌ
[38:42]
Urge with your foot; here is a cool washing-place and a drink.
(The command was given:) "Strike with thy foot: here is (water) wherein to wash, cool and refreshing, and (water) to drink."
(And it was said unto him): Strike the ground with thy foot. This (spring) is a cool bath and a refreshing drink.