Sahih al-Bukhari 545
Narrated `Aisha:
Allah's Messenger (ﷺ) used to offer the `Asr prayers at a time when the sunshine was still inside my chamber 
and no shadow had yet appeared in it.
حَدَّثَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ شِهَابٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم صَلَّى الْعَصْرَ وَالشَّمْسُ فِي حُجْرَتِهَا، لَمْ يَظْهَرِ الْفَىْءُ مِنْ حُجْرَتِهَا‏.‏