The Holy Prophet(sa) had a paternal cousin whose name was ‘Abdullāh bin Jaḥash(ra), and he was martyred in the battle of Uḥud, leaving behind his wife Zainab bint Khuzaimah(ra) without support. The Holy Prophet(sa) who was an unparalleled model of kind treatment towards near relatives sent a proposal of marriage to Zainab bint Khuzaimah(ra) himself, and upon her consent, took her into a bond of matrimony. At the time, Ḥaḍrat Zainab(ra) was thirty years of age, more or less. However, only a few months after her marriage, she passed away in Rabī‘ul-Awwal 4 A.H., and the Holy Prophet(sa) buried her in Jannatul- Baqī‘. Zainab bint Khuzaimah(ra) was a very righteous and pious lady, and due to her charity, alms, and attention towards the less fortunate, she was generally known by the name of “Ummul-Masākīn.”1
1 Sharḥul-‘Allāmatiz-Zarqānī ‘Alal-Mawāhibil-Ladunniyyah, By Allāmah Shihābuddīn Al-Qusṭalānī, Volume 4, pp. 416-417, Zainab Ummul-Masākīna Wal-Mu’minīn, Dārul-Kutubil-‘Ilmiyyah, Beirut, Lebanon, First Edition (1996)
Al-Iṣābah Fī Tamīziṣ-Ṣaḥābah, By Aḥmad bin ‘Alī bin Ḥajar Al-‘Asqalānī, Volume 8, p. 157, Zainab bint Khuzaimah, Dārul-Kutubil-‘Ilmiyyah, Beirut, Lebanon (2005)