Mishkat al-Masabih 4 Prayer كتاب الصلاة 531

وَعَنْ عَائِشَةَ رِضَى اللَّهُ عَنْهَا قَالَتْ: صَلَّى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي حُجْرَتِهِ وَالنَّاسُ يَأْتَمُّونَ بِهِ مِنْ وَرَاءِ الْحُجْرَةِ. رَوَاهُ أَبُو دَاوُد

‘A’isha said that God’s messanger prayed in his private apartment and the people followed his lead behind the apartment. Abu Dawud transmitted it.