Hadith 1095:4
Uthman ibn Umar narrated to us, Yunus narrated to us, from al-Zuhri, from Mahmud ibn al-Rabi’, from ‘Itban ibn Malik: "That the Messenger of Allah (peace and blessings of Allah be upon him) prayed the Duha (forenoon) voluntary prayer in his house, so they stood behind him and prayed with his prayer."
حدثنا عثمان بن عمر، حدثنا يونس، عن الزهري، عن محمود بن الربيع، عن عتبان بن مالك: " أن رسول الله صلى الله عليه وسلم صلى في بيته سبحة الضحى، فقاموا وراءه فصلوا بصلاته "