Hadrat `Uthman (radiAllahu anhu) was shattered when his wife Rukayya (radiAllahu anha), the noble daughter of the Prophetﷺ, died. When the Prophet ﷺ asked him about the intensity of his grief, he said, “O Prophet! No one has lost as much as I have. Not only must I say farewell to my beloved wife, but the bond of kinship between you and me no longer exists.” When his relatives suggested to him that he might marry again, he declared, “I cannot take anyone else after the Prophet as my father-in-law. I cannot marry anyone after his daughter!”
The Prophetﷺ was touched by this outburst of love and commitment. When some time had passed, he arranged for `Uthman (radiAllahu anhu) to marry another of his daughters, Umm Kulthûm (radiAllahu anha). Umm Kulthûm (radiAllahu anha) also died during `Uthman’s lifetime. The Prophetﷺ told him, “If I had a third unmarried daughter, I would marry her to you as well.” Such were his words of special love for `Uthman (radiAllahu anhu).