Sahih Bukhari | Volume 8 | Hadith Number 762

Narrated by 'Aisha
Once Allah's Apostle entered upon me and he was in a very happy mood and said, "O 'Aisha: Don't you know that Mujazziz Al-Mudliji entered and saw Usama and Zaid with a velvet covering on them and their heads were covered while their feet were uncovered. He said, 'These feet belong to each other."