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 good news of a house in Paradise made of hollow pearls, in which there is no noise and no fatigue."
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 من قصب، لا صخب فيه ولا نصب.
Bukhari narrated it in Manaqib (3820), and Muslim in Fadail al-Sahabah (2432), both from the hadith of Muhammad bin Fudayl, from Umara, from Abu Zura, from Abu Hurairah, who mentioned it.