(The command was given:) “Strike with thy foot: here is (water) wherein to wash, cool and refreshing, and (water) to drink.”
. The recuperative process having begun, he was
commanded to strike the earth or a rock with his foot,
and a fountain or fountains gushed forth,-to give him a
bath and clean his body; to refresh his spirits; and to
give him drink and rest.
This is a fresh touch, not mentioned in Surah 21. or in
the Book of Job, but adding beautifully to our realisation
of the picture.
Yusuf Ali, Abdullah. Translation and Commentary of the Quran. (surah 38 verse 42). Quran Arabic with English Translation & Commentary (Tafsir) by Abdullah Yusuf Ali, Free Download (quran4u.com)