وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ رَبِّهِ بْنِ سَعِيدٍ، عَنْ أَبِي بَكْرِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ الْحَارِثِ بْنِ هِشَامٍ، عَنْ عَائِشَةَ، وَأُمِّ سَلَمَةَ زَوْجَىِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُمَا قَالَتَا كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصْبِحُ جُنُبًا مِنْ جِمَاعٍ غَيْرِ احْتِلاَمٍ فِي رَمَضَانَ ثُمَّ يَصُومُ ‏.‏

Yahya related to me from Malik from Abd Rabbih ibn Said from AbuBakr ibn Abd ar-Rahman ibn al-Harith ibn Hisham from A'isha and UmmSalama, the wives of the Prophet, may Allah bless him and grant himpeace, that the Prophet, may Allah bless him and grant him peace, usedto get up in the morning junub from intercourse, not a dream, inRamadan, and then he would fast." Translation Not Available

Book Ref: Muwatta Imam Malik Book 18 Hadith 643
Web Ref:  Muwatta Imam Malik Book 18 Hadith 10