Al-Kāfi - Volume 3 > The Quantity of Water Required for Wudu’, Showers and One Who Is Excessive in the Use of Water for Wudu’
Hadith #7

7ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنْ فَضَالَةَ بْنِ أَيُّوبَ عَنْ جَمِيلٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلام) فِي الْوُضُوءِ قَالَ إِذَا مَسَّ جِلْدَكَ الْمَاءُ فَحَسْبُكَ.

7. A number of our people have narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Fadalah ibn Ayyub from Jamil from Zurarah who has said the following: “Abu Ja‘far, ‘Alayhi al-Salam, has said, ‘It is sufficient for Wudu’ to allow water to touch your skin (of the parts to be washed for Wudu’).”’