حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ، عَنْ مُطَرِّفٍ، عَنِ الشَّعْبِيِّ، عَنْ مَسْرُوقٍ، عَنْ عَائِشَةَ، قَالَتْ كَانَ النَّبِيُّ ـ صلى الله عليه وسلم ـ يَبِيتُ جُنُبًا فَيَأْتِيهِ بِلاَلٌ فَيُؤْذِنُهُ بِالصَّلاَةِ فَيَقُومُ فَيَغْتَسِلُ فَأَنْظُرُ إِلَى تَحَدُّرِ الْمَاءِ مِنْ رَأْسِهِ ثُمَّ يَخْرُجُ فَأَسْمَعُ صَوْتَهُ فِي صَلاَةِ الْفَجْرِ ‏.‏ قَالَ مُطَرِّفٌ فَقُلْتُ فِي رَمَضَانَ قَالَ رَمَضَانُ وَغَيْرُهُ سَوَاءٌ ‏.‏

It wasnarrated that ‘Aishah said: “The Prophet (PBUH) used to spendthenight in a state of sexual impurity, then Bilal would come to himandinform him that it is time for prayer. So he would get up and haveabath, and I would see the water dripping from his head, then hewouldgo out and I would hear his voice during Fajr prayer.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 7 Hadith 1703
Web Ref:  Sunan Ibn Majah Vol 1 Book 7 Hadith 1703