The Book of Greetings
39/8. Chapter:
The Prohibition Of Being Alone With A Non-Mahram Woman Or Entering Upon Her
Sahih Muslim
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، ح وَحَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَخْبَرَنَا اللَّيْثُ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ أَبِي الْخَيْرِ، عَنْ عُقْبَةَ بْنِ عَامِرٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِيَّاكُمْ وَالدُّخُولَ عَلَى النِّسَاءِ " . فَقَالَ رَجُلٌ مِنَ الأَنْصَارِ يَا رَسُولَ اللَّهِ أَفَرَأَيْتَ الْحَمْوَ قَالَ " الْحَمْوُ الْمَوْتُ " .
`Uqba b. `Amir reported Allah's Messenger (ﷺ) as saying: Beware of getting, into the houses and meeting women (in seclusion). A person from the Ansar said: Allah's Messenger, what about husband's brother, whereupon he (ﷺ) said: Husband's brother is like death.
Reference : Sahih Muslim 2172aIn-book reference : Book 39, Hadith 28USC-MSA web (English) reference : Book 26, Hadith 5400