Sahih Bukhari Volume 1, Book 3, Hadith 117

حَدَّثَنَا آدَمُ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنَا الْحَكَمُ، قَالَ سَمِعْتُ سَعِيدَ بْنَ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ بِتُّ فِي بَيْتِ خَالَتِي مَيْمُونَةَ بِنْتِ الْحَارِثِ زَوْجِ النَّبِيِّ صلى الله عليه وسلم وَكَانَ النَّبِيُّ صلى الله عليه وسلم عِنْدَهَا فِي لَيْلَتِهَا، فَصَلَّى النَّبِيُّ صلى الله عليه وسلم الْعِشَاءَ، ثُمَّ جَاءَ إِلَى مَنْزِلِهِ، فَصَلَّى أَرْبَعَ رَكَعَاتٍ، ثُمَّ نَامَ، ثُمَّ قَامَ، ثُمَّ قَالَ ‏"‏ نَامَ الْغُلَيِّمُ ‏"‏‏.‏ أَوْ كَلِمَةً تُشْبِهُهَا، ثُمَّ قَامَ فَقُمْتُ عَنْ يَسَارِهِ، فَجَعَلَنِي عَنْ يَمِينِهِ، فَصَلَّى خَمْسَ رَكَعَاتٍ ثُمَّ صَلَّى رَكْعَتَيْنِ، ثُمَّ نَامَ حَتَّى سَمِعْتُ غَطِيطَهُ ـ أَوْ خَطِيطَهُ ـ ثُمَّ خَرَجَ إِلَى الصَّلاَةِ

Narrated By Ibn 'Abbas : I stayed overnight in the house of my aunt Maimuna bint Al-Harith (the wife of the Prophet) while the Prophet was there with her during her night turn. The Prophet offered the 'Isha prayer (in the mosque), returned home and after having prayed four Rakat, he slept. Later on he got up at night and then asked whether the boy (or he used a similar word) had slept? Then he got up for the prayer and I stood up by his left side but he made me stand to his right and offered five Rakat followed by two more Rakat. Then he slept and I heard him snoring and then (after a while) he left for the (Fajr) prayer.