(271) بَابُ الْحَيَاءِ
'A'isha said, "The Prophet was lying down in my room with his thighuncovered when Abu Bakr asked for permission to enter. He gave him permissionto enter, remaining as he was. Then 'Umar asked for permission to comein and he gave him permission, remaining as he was. Then 'Uthman askedfor permission to enter and the Prophet, may Allah bless him and granthim peace, sat up and arranged his garment, and then he came in and spoke.When he left, I said, 'Messenger of Allah, Abu Bakr came in and you didnot exert yourself nor concern yourself with him. Then 'Umar came in andyou did not exert yourself nor concern yourself with him. Then 'Uthman camein and you sat up and arranged your garment.' He said, 'Should I not bemodest before a man before whom the angels are modest?'"
Reference: Al-Adab Al-Mufrad 603
In-book reference: Book 30, Hadith 66
English translation: Book 30, Hadith 603