The Prophet ﷺ did not marry any other woman alongside Khadijah until she passed away.
لم يتزوج النبي ﷺ على خديجة حتى ماتت.
Muslim narrated it in the Book of the Virtues of the Companions (2436) from Abd bin Humayd, who said, Abdul-Razzaq informed us, Maamar informed us, from Zuhri, from Urwa, from Ayesha, who mentioned it.