Are the daughters of the Prophet, may God’s prayers and peace be upon him—Umm Kulthum, Ruqayyah, and Zaynab—his biological daughters or the daughters of his wives, as the Rafidah claim?

The Hadith confirm that Umm Kulthum, Ruqayyah, and Zaynab — may Allah be pleased with all of them — are the daughters of the Messenger of Allah, peace and blessings be upon him. The Prophet, peace and blessings be upon him, married Khadijah bint Khuwaylid, and she bore him Al-Qasim, Al-Tahir, Zaynab, Ruqayyah, Umm Kulthum, and Fatimah. The Messenger of Allah, peace and blessings be upon him, prayed while carrying Umamah bint Zaynab. After Ruqayyah's death, the Prophet, peace and blessings be upon him, married Umm Kulthum to him, and he said to Uthman: "If I had ten [daughters], I would marry them all to you."