حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ عِكْرِمَةَ، عَنْ بَعْضِ، أَزْوَاجِ النَّبِيِّ صلى الله عليه وسلم أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ إِذَا أَرَادَ مِنَ الْحَائِضِ شَيْئًا أَلْقَى عَلَى فَرْجِهَا ثَوْبًا ‏.‏

Narrated One of the Wives of the Prophet: Ikrimah reported on the authority of one of the wives of the Prophet (PBUH) saying: When the Prophet (PBUH) wanted to do something (i.e. kissing, embracing) with (his) menstruating wife, he would put a garment on her private part. Translation Not Available

Book Ref: Sunan Abi Dawud Book 1 Hadith 272
Web Ref:  Sunan Abi Dawud Book 1 Hadith 272

---