Riyad as-Salihin, Book 1, Hadith 344 (In-Book) ⓘ

'Aishah (May Allah be pleased with her) reported: I never felt jealous of any of the wives of the Prophet as much as I did of Khadijah (May Allah be pleased with her), although I have never seen her, but the Prophet used to mention her very often. Whenever he slaughtered a sheep, he would cut it into pieces and send them to the women friends of Khadijah (May Allah be pleased with her). When I sometimes said to him: "You treat Khadijah in such a way as if there is no woman on earth except her". He would say, "Khadijah was such and such (commending her and speaking well of her), and I had children from her".[Al-Bukhari and Muslim].Another narration is: And if he slaughtered a sheep, he would send meat to the friends of Khadijah (May Allah be pleased with her) as a present as much as would suffice them.Another narration is: When a sheep was slaughtered, he would say, "Send this meat to Khadijah's friends." Once, Halah bint Khuwailid (May Allah be pleased with her), sister of Khadijah (May Allah be pleased with her), sought permission of Messenger of Allah to enter. He recognized and recalled to his mind the manner of Khadijah (May Allah be pleased with her) and was deeply moved. He said, "O Allah, she must be Halah bint Khuwailid".[Al-Bukhari and Muslim].

وعن عائشة رضي الله عنها قالت‏:‏ ما غرت على أحد من نساء النبي صلى الله عليه وسلم ما غرت على خديجة رضي الله عنها، وما رأيتها قط، ولكن كان يكثر ذكرها، وربما ذبح الشاة، ثم يقطعها أعضاء، ثم يبعثها في صدائق خديجة، فربما قلت له‏:‏ كأن لم يكن في الدنيا إلا خديجة‏!‏ فيقول‏:‏ ‏"‏إنها كانت وكانت وكان لي منها ولد‏"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏ ‏.‏ وفي رواية وإن كان ليذبح الشاء، فيُهدي في خلائلها منها ما يسعهن‏.‏ وفي رواية كان إذا ذبح الشاة يقول‏:‏ ‏"‏أرسلوا بها إلى أصدقاء خديجة‏"‏‏.‏ وفي رواية قالت‏:‏ استأذنت هالة بنت خويلد أخت خديجة على رسول الله صلى الله عليه وسلم، فعرف استئذان خديجة، فارتاح لذلك فقال‏:‏ اللهم هالة بنت خويلد‏"‏‏.‏