It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she heard the Messenger of Allah (peace and blessings be upon him) say: "When the mukatab (a slave who has contracted to buy his freedom) has enough wealth with which he can pay the price of his freedom, then observe hijab from him."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19980
It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she heard the Messenger of Allah (peace and blessings be upon him) say: "When the mukatab finds enough wealth with which he can pay, then observe hijab from him."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19981
It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her); she said: I was with the Messenger of Allah (peace and blessings be upon him), and Sayyidah Maymunah (may Allah be pleased with her) was also with him, when Sayyiduna Ibn Umm Maktum (may Allah be pleased with him) came. The Messenger of Allah (peace and blessings be upon him) said: "Both of you observe hijab from him." We said: O Messenger of Allah, is he not blind, so that he can neither see us nor recognise us? He (peace and blessings be upon him) said: "And if (he is blind), what of you two? Do you not see him?"
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19982
It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) would be intimate with her (short of intercourse) even while she was menstruating, while she had a waist-wrapper (izar) tied on.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19983