From Sahih Muslim (Hadith 3618):
A'isha (Allah be pleased with her) reported:One day Allah's Apostle (ﷺ) visited me looking pleased and he said: 'A'isha, don't you see Mujazziz al-Mudliji? (He) entered (my house) and saw Usama and Zaid with a rug over them covering their heads, but their feet appeared, and (he) said: These feet are related to one another
Reference: Muslim 3618