Jibreel came to the Prophet ﷺ and said, "Messenger of Allah, here is Khadijah coming with a vessel containing seasoning, food, or drink. When she reaches you, convey to her the greeting of peace from her Lord and from me, and give her the glad tidings of a house in Paradise made of hollowed pearl, in which there will be no clamor and no toil."
أتى جبريل النبي ﷺ فقال: يا رسول الله، هذه خديجة قد أتت، معها إناء فيه إدام، أو طعام، أو شراب، فإذا هي أتتك فاقرأ عليها السلام من ربها، ومني، وبشرها ببيت في الجنة لا صخب فيه ولا نصب.
Bukhari narrated it in the Virtues of the Ansar (3820), and Muslim in the Virtues of the Companions (2432), both through various routes from Muhammad bin Fudayl, from Umara, from Abu Zura, from Abu Hurairah, who said, and then he mentioned it. The wording given is Bukhari's, and Muslim's wording is similar.