Ayesha reported,

Ayesha said, "The Messenger of Allah ﷺ was lying down in my house with his thighs, or his shins, uncovered. Abu Bakr asked permission to enter, and the Prophet ﷺ granted it while remaining in that state, and they spoke together. Then Umar asked permission to enter, and he granted it while still in that state, and they spoke. Then Uthman asked permission to enter, so the Messenger of Allah ﷺ sat up and adjusted his clothing."Muhammad, meaning Ibn Abu Harmala, remarked, "I do not say this happened all on the same day."Then Uthman entered and they spoke. After he left, Ayesha said, "Abu Bakr entered and you did not stir for him or pay him special attention. Then Umar entered and you did not stir for him or pay him special attention. Then Uthman entered, and you sat up and adjusted your clothing?"He replied, "Should I not feel modest before a man whom the angels feel modest before?"

عن عائشة قالت

كان رسول الله ﷺ مضطجعا في بيتي كاشفا فخذيه أو ساقيه، فاستأذن أبو بكر فأذن له وهو على تلك الحال، فتحدث، ثم استأذن عمر فأذن له وهو كذلك فتحدث، ثم استأذن عثمان فجلس رسول الله ﷺ وسوى ثيابه- قال محمد (يعني ابن أبي حرملة): ولا أقول ذلك في يوم واحد- فدخل فتحدث. فلما خرج قالت عائشة: دخل أبو بكر فلم تهتش له ولم تباله، ثم دخل عمر فلم تهتش له ولم تباله، ثم دخل عثمان فجلست وسويت ثيابك؟ فقال: ألا أستحي من رجل تستحي منه الملائكة.