I never felt as jealous of any of the Prophet's ﷺ wives as I did of Khadijah, because of how often he mentioned her, though I never even saw her.
ما غرت للنبي ﷺ على امرأة من نسائه ما غرت على خديجة، لكثرة ذكره إياها، وما رأيتها قط.
Muslim narrated it in Fadail al-Sahabah (2435 - 76) from Abd bin Humayd, from Abdul-Razzaq, from Mamar, from Zuhri, from Urwa, from Ayesha, and he mentioned it.