´It was narrated that ‘Aishah said:` “The Messenger of Allah had a reed mat that he would spread out during the day, and make into a compartment at night, towards which he would perform prayer.”
Hadith ReferenceSunan Ibn Majah / Establishing the Prayer and the Sunnah Regarding Them / Hadith: 942
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم, -