Sahih al-Bukhari

Sahih al-Bukhari 381

To offer As-Salat (the prayers) on a Khumra (a small mat, hardly sufficient for the face and hands while prostrating during Salat)
Arabic hadith text
حَدَّثَنَا أَبُو الْوَلِيدِ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنَا سُلَيْمَانُ الشَّيْبَانِيُّ، عَنْ عَبْدِ اللَّهِ بْنِ شَدَّادٍ، عَنْ مَيْمُونَةَ، قَالَتْ كَانَ النَّبِيُّ صلى الله عليه وسلميُصَلِّي عَلَى الْخُمْرَةِ‏.‏
Translation
Narrated Maimuna

Allah's Messenger (ﷺ) used to pray on Khumra.