Language:
كتاب الصلاة
8  
Prayers (Salat)
(22)
Chapter: To offer As-Salat (the prayers) on the bed
(22)
باب الصَّلاَةِ عَلَى الْفِرَاشِ
Sahih al-Bukhari 384

Narrated `Urwa:

The Prophet (ﷺ) prayed while `Aisha was lying between him and his Qibla on the bed on which they used to sleep.

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ يَزِيدَ، عَنْ عِرَاكٍ، عَنْ عُرْوَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يُصَلِّي وَعَائِشَةُ مُعْتَرِضَةٌ بَيْنَهُ وَبَيْنَ الْقِبْلَةِ عَلَى الْفِرَاشِ الَّذِي يَنَامَانِ عَلَيْهِ‏.‏
Reference : Sahih al-Bukhari 384
In-book reference : Book 8, Hadith 36
USC-MSA web (English) reference : Vol. 1, Book 8, Hadith 381
  (deprecated numbering scheme)