Sahih Muslim Book - 6, Hadith - 1728

وَحَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ حَدَّثَنَا زُهَيْرٌ حَدَّثَنَا أَبُو إِسْحَاقَ ح وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى أَخْبَرَنَا أَبُو خَيْثَمَةَ عَنْ أَبِى إِسْحَاقَ قَالَ سَأَلْتُ الأَسْوَدَ بْنَ يَزِيدَ عَمَّا حَدَّثَتْهُ عَائِشَةُ عَنْ صَلاَةِ رَسُولِ اللَّهِ -صلى الله عليه وسلم- قَالَتْ كَانَ يَنَامُ أَوَّلَ اللَّيْلِ وَيُحْيِى آخِرَهُ ثُمَّ إِنْ كَانَتْ لَهُ حَاجَةٌ إِلَى أَهْلِهِ قَضَى حَاجَتَهُ ثُمَّ يَنَامُ فَإِذَا كَانَ عِنْدَ النِّدَاءِ الأَوَّلِ - قَالَتْ - وَثَبَ - وَلاَ وَاللَّهِ مَا قَالَتْ قَامَ - فَأَفَاضَ عَلَيْهِ الْمَاءَ - وَلاَ وَاللَّهِ مَا قَالَتِ اغْتَسَلَ. وَأَنَا أَعْلَمُ مَا تُرِيدُ - وَإِنْ لَمْ يَكُنْ جُنُبًا تَوَضَّأَ وُضُوءَ الرَّجُلِ لِلصَّلاَةِ ثُمَّ صَلَّى الرَّكْعَتَيْنِ.

It was narrated that Abu Ishaq said: "I asked Al-Aswad bin Yazid what 'Aishah had told him about the prayer of the Messenger of Allah (s.a.w). She said: 'He used to sleep for the first part of the night and stay up for the latter part. Then if he had any need (for intimacy) from his wife he would satisfy that need, then he would go to sleep. Then when the first call came,' she said, 'he leapt up' - and by Allah she did not say 'he got up' - 'and poured water over himself - and by Allah, she did not say, 'he performed Ghusl,' and I know what she meant. 'If he was not Junub, he would perform Wudu' as a man does for prayer, then he prayed the two Rak'ah."'