Al-Zuhri narrated: Sayyiduna Uthman (may Allah be pleased with him) married Sayyidah Umm Kulthum bint Rasulullah (peace and blessings be upon him); she passed away while married to him and bore him no children.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19265