"And if you are in a state of janabah (major ritual impurity), then purify yourselves."
Yahya [narrated]: From Sa'id, from Qatadah (from Al-Hasan), from Abu Hurayrah, who said:
"Under every hair there is janabah; so wash the hair and cleanse the skin."
﴿وَإِن كُنْتُم جنبا فاطهروا﴾.
يَحْيَى: عَنْ سَعِيدٍ، عَنْ قَتَادَةَ (عَنِ الْحَسَنِ)، عَنْ أَبِي هُرَيْرَةَ قَالَ:
تَحْتَ كُلِّ شَعْرَةٍ جَنَابَةٌ؛ فَاغْسِلُوا الشَّعْرَ، وَأَنْقُوا الْبَشَرَ ".