Ziyad Abu Amr reported,

I said to Ubayy bin Kaab, "If all the wives of the Prophet ﷺ had died, would it have been lawful for him to marry?"He replied, "What would have made that unlawful for him?"I said, "Because of His saying, 'No women are lawful to you after this' [Ahzab 33:52]."He said, "Only a particular category of women had been made lawful for the Messenger of Allah ﷺ."

حدثنا عبد الله حدثني عبيد الله بن عمر حدثنا يزيد بن زريع وعبد الأعلى قالا حدثنا داود عن محمد بن أبي موسى

عن زياد الأنصاري قال

قلت لأبي بن كعب لو متن نساء النبي ﷺ كلهن كان يحل له أن يتزوج قال وما يحرم ذاك عليه قال قلت لقوله {لا يحل لك النساء من بعد} قال إنما أحل لرسول الله ﷺ ضرب من النساء