38-Surah Sad ( The Letter Sad ) 42
[So he was told], ‘ Strike [the ground] with your foot; this is a [spring for] a cool bath and drink.’
ارْكُضْ بِرِجْلِكَ ۖ هَٰذَا مُغْتَسَلٌ بَارِدٌ وَشَرَابٌ
Quran's Tafhim ( explanation)
*43) That is, "As soon as he stamped his foot on the ground, a spring gushed forth by Allah's Command, drinking from which and washing with which was the remedy of the Prophet Job's disease." Most probably he was suffering from some skin disease. According to the Bible also: "Satan smote Job with sore boils from the sole of his foot unto his crown. " (Job, 2: 7).