مشكوة المصابيح
Mishkat al-Masabih
كتاب المناسك
The Book of Pilgrimage Rites
(غَسْلُ الرَّأْسِ فِي حَالَةِ الإِحْرَامِ)
(Washing the head in the state of Ihram)
Hadith 2684
وَعَن أَبِي أَيُّوبَ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَغْسِلُ رَأْسَهُ وَهُوَ مُحْرِمٌ
Abu Ayyub said that the Prophet used to wash his head when he was in the sacred state. Bukhari and Muslim.
