(13) Marriage
كتاب النكاح
(1a) Chapter: Looking at a Woman who is asked in Marriage, and an Explanation of what may not be seen - Section 1
(1) باب النظر إلى المخطوبة وبيان العورات - الفصل الأول
Mishkat al-Masabih 3101 
Jabir reported God's Messenger as saying, “A man must not spend the night in the house of a woman who has been married unless he is her husband or a close relative.” Muslim transmitted it.
وَعَنْ جَابِرٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِلَّا لَا يبتن رَجُلٌ عِنْدَ امْرَأَةٍ ثَيِّبٍ إِلَّا أَنْ يَكُونَ ناكحا أَو ذَا محرم» . رَوَاهُ مُسلم
 صَحِيحٌ  (الألباني)حكم :
Reference : Mishkat al-Masabih 3101
In-book reference : Book 13, Hadith 22