Musnad Abu Ya'la al-Mawsili 209:44

Abu Bakr ibn Abi Shaybah narrated to us, Abdullah ibn al-Mubarak narrated to us, from Yunus, from al-Zuhri, from Nabhan, from Umm Salamah, who said: I and Maymunah were with the Prophet, may Allah bless him and grant him peace, when Ibn Umm Maktum came seeking permission to enter, and that was after the hijab had been imposed. He said: "Rise [and go behind the screen]." They both said: "He is blind; he does not see us." He said: "Are you both blind? Do you not see him?"