Khalid bin 'Abdur Rahman خالد بن عبد الرحمن بن بكير · Combing the Hair (Kitab Al-Tarajjul)

When Hind, daughter of Utbah, said: Prophet of Allah, accept my allegiance, he replied; I shall not accept your allegiance till you make a difference to the palms of your hands; for they look like the paws of a beast of prey.