Bathing (Ghusl)
حَدَّثَنَا آدَمُ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنَا الْحَكَمُ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، عَنْ عَائِشَةَ، قَالَتْ كَأَنِّي أَنْظُرُ إِلَى وَبِيصِ الطِّيبِ فِي مَفْرِقِ النَّبِيِّ صلى الله عليه وسلم وَهْوَ مُحْرِمٌ.Narrated `Aisha:It is as if I am just looking at the glitter of scent in the parting of the Prophet's head hair while he was a Muhrim
From Sahih al-Bukhari, whose reports the scholars accept as authentic.