Ayoub bin Muhammad al-Wazan أيوب بن محمد بن زياد الوزان · Combing the Hair (Kitab Al-Tarajjul)

The Prophet (ﷺ) said: The angels do not come near three: the dead body of the unbeliever, one who smears himself with khaluq, and the one who is sexually defiled except that he performs ablution.