Hadith 30

Sahih Muslim

Book 39: The Book of Greetings

Chapter 8

The Prohibition Of Being Alone With A Non-Mahram Woman Or Entering Upon Her

باب تَحْرِيمِ الْخَلْوَةِ بِالأَجْنَبِيَّةِ وَالدُّخُولِ عَلَيْهَا ‏‏

Sahih Muslim 2172c
وَحَدَّثَنِي أَبُو الطَّاهِرِ، أَخْبَرَنَا ابْنُ وَهْبٍ، قَالَ سَمِعْتُ اللَّيْثَ بْنَ سَعْدٍ، يَقُولُ الْحَمْوُ أَخُ الزَّوْجِ وَمَا أَشْبَهَهُ مِنْ أَقَارِبِ الزَّوْجِ ابْنُ الْعَمِّ وَنَحْوُهُ ‏.‏
Ibn Wahb reported:

I heard Laith b. Said as saying: Al-Hamv means the brother of husband or like it from amongst the relatives of the husband, for example, cousin, etc.