سُنَنُ ابْنِ مَاجَهْ
Sunan Ibn Majah 636
The Book of Purification and its Sunnah
What a man may do with his wife when she is menstruating
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، عَنْ عَائِشَةَ، قَالَتْ كَانَتْ إِحْدَانَا إِذَا حَاضَتْ أَمَرَهَا النَّبِيُّ ـ صلى الله عليه وسلم ـ أَنْ تَأْتَزِرَ بِإِزَارٍ ثُمَّ يُبَاشِرُهَا .
It was narrated that 'Aishah said: "If one of us was menstruating, the Messenger of Allah would tell her to tie her waist-wrapper around herself, then he would embrace her."
Sunan Ibn Majah, 636Sahih (Darussalam)