Narrated Aisha, Ummul Mu'minin:
The Messenger of Allah (ﷺ) enteredupon me. The version of Musaddad and Ibn as-Sarh has: one day looking pleased". The version of Uthman has: "The lines of his forehead were realised." He said: O Aisha, are you not surprised to hear that Mujazziz al-Mudlaji saw that Zayd and Usamah had a rug over them concerning their heads and letting their feet appear. He said: These feet are related.
Abu Dawud: Usamah was black and Zaid was white.