Ubaidullah bin 'Umar al-Qawariri عبيد الله بن عمر القواريري · Combing the Hair (Kitab Al-Tarajjul)

When the Prophet of Allah (ﷺ) conquered Makkah. The people of Makkah began to bring their boys and he would invoke a blessing on them and rub their heads. I was brought, but as I had been perfumed with khaluq, he did not touch me because of the khaluq.