I never felt jealous of any of the Prophet's wives more than I felt jealous of Khadījah (may Allah be pleased with her). I never saw her, but he used to mention her a lot

عن عائشة رضي الله عنها قالت: «ما غِرْتُ على أحد من نساء النبي صلى الله عليه وسلم ما غِرْتُ على خديجة رضي الله عنها ، وما رأيتها قط، ولكن كان يُكثر ذِكْرَها، وربما ذبح الشَّاةَ، ثم يُقطعها أَعْضَاءً، ثم يَبْعَثُهَا في صَدَائِقِ خديجة، فربما قلت له: كأن لم يكن في الدنيا إلا خديجة! فيقول: «إنها كانت وكانت وكان لي منها وَلَدٌ». وفي رواية: وإن كان لَيَذْبَحُ الشَّاءَ، فيُهدي في خَلَائِلِهَا منها ما يَسَعُهُنَّ. وفي رواية: كان إذا ذَبَحَ الشَّاةَ، يقول: «أرسلوا بها إلى أصدقاء خديجة». وفي رواية: قالت: اسْتَأْذَنَتْ هالة بنت خويلد أخت خديجة على رسول الله صلى الله عليه وسلم فعرف استئذان خديجة، فارْتَاحَ لذلك، فقال: «اللهم هالة بنت خويلد».

‘Ā’ishah (may Allah be pleased with her) reported: I never felt jealous of any of the Prophet's wives more than I felt jealous of Khadījah (may Allah be pleased with her). I never saw her, but he used to mention her a lot. He would slaughter a sheep and cut it into pieces and then send (gifts of meat) to the friends of Khadījah. I would sometimes say to him: "It is as if there was none in the world except Khadījah!" And he would say: "She was such-and-such, and I had children from her." In another narration: "He would slaughter a sheep and send enough meat to her close friends." In a third narration: "When he slaughtered a sheep, he would say: 'Send it to the friends of Khadījah.'" In a fourth narration: "Hālah bint Khuwaylid, the sister of Khadījah, asked for permission to enter unto the Messenger of Allah (may Allah's peace and blessings be upon him). So he remembered the way Khadījah would seek permission. This pleased him, and he said: 'O Allah, (let it be) Hālah bint Khuwaylid.'"

Source · Narrated by Bukhari & Muslim due to its all chains of narrators

From the Hadith Encyclopedia (hadeethenc.com).