The Prophet (ﷺ) stayed for three nights between Khaibar and Al-Madîna and was married to Șafiya. I invited the Muslims to his marriage banquet and there was neither meat nor bread in that banquet, but the Prophet (ﷺ) ordered Bilâl to spread the leather mats on which dates, dried yoghurt and butter were put. The Muslims said amongst themselves, "Will she (i.e. Safiya) be one of the mothers of the believers (i.e. one of the wives of the Prophet ﷺ) or just (a lady captive) of what his right-hand possesses?" Some of them said, "If the Prophet (ﷺ) makes her observe the veil, then she will be one of the mothers of the believers (i.e. one of the Prophet's wives), and if he does not make her observe the veil, then she will be lady-slave." So when he departed, he made a place for her behind him (on his camel) and made her observe the veil. [5:524-0.B]