Sunan Abi Dawud 4017

ʿAbd Allah ibn Maslamah narrated to us: my father narrated to me. And Ibn Bashshar narrated to us: Yahya narrated to us, with a similar report, from Bahz ibn Hakim, from his father, from his grandfather, who said: I asked: ‘Messenger of Allah, what should we cover of our nakedness, and what may we leave uncovered?’ He said: ‘Guard your nakedness except from your wife or those whom your right hand possesses.’ I asked: ‘What if some people are among one another?’ He said: ‘If you can keep anyone from seeing it, then let no one see it.’ I asked: ‘What if one of us is alone?’ He said: ‘Allah is more deserving that one feel modest before Him than people.’