(8) باب تَحْرِيمِ الْخَلْوَةِ بِالأَجْنَبِيَّةِ وَالدُّخُولِ عَلَيْهَا
`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 2172 a
In-book reference: Book 39, Hadith 28
USC-MSA web (English) reference(deprecated numbering scheme): Book 26, Hadith 5400