Rayhāna bint Zayd was an Israelite Jewish woman from the Banu Nadir tribe, who is revered by Muslims as one of the Ummahaatu'l-Mu'mineen, or Mothers of the Faithful - the Wives of the blessed Prophet Muhammad (May the peace and blessings of Allah be upon him).
Rayhana was originally a member of the Banu Nadir tribe who married a man from the Banu Qurayza. After the Banu Qurayza was defeated by the armies of Islam in the Siege of the Banu Qurayza neighborhood, Rayhana was among those enslaved, while the men were executed.
According to Ibn Ishaq, the holy Prophet Muhammad (May the peace and blessings of Allah be upon him) took her as a maiden slave and offered her the status of becoming his wife if she accepted Islam, but she refused and hence, remained his slave. According to his account, even though Rayhana is said to have later converted to Islam, she died as a slave.
Ibn Sa'd writes and quotes Waqidi that she was manumitted but later married by the Prophet (may Allah’s salutations be upon him). According to Al-Halabi, the Prophet Muhammad (peace be upon him) married and appointed dower for her. Ibn Hajar quotes a description of the house that the Prophet Muhammad (salla llaahu alaihi wasallam) gave to Rayhana after their marriage from Muhammad Ibn al-Hassam's History of Medina.
In another version, Hafiz Ibn Manda writes that the Prophet Muhammad (may Allah’s peace and blessings be upon him) set Rayhana free, and she went back to live with her own people. 19th-century Muslim scholar, Shibli Nomani, also supports this version as the most likely.
However, the most accepted position among the Muslims is that the Prophet manumitted her. She died young, 11 years after the Prophet's farewell hajj and was buried in Jannat al-Baqi cemetery. Not much is known about Rayhana; she died 10 years after Muhammad. Source: https://en.wikipedia.org/wiki/List_of_Sahabah