Ayesha reported,

I was never as jealous of any woman as I was of Khadijah, even though she had died three years before he married me. This was because of how often I heard him mention her, and because his Lord عز وجل had commanded him to give her glad tidings of a house of pearl in Paradise. Whenever he slaughtered a sheep, he would send portions of it to her close friends.

Muslim 6277

Sahih

حدثنا أبو كريب محمد بن العلاء حدثنا أبو أسامة حدثنا هشام عن أبيه

عن عائشة قالت

ما غرت على امرأة ما غرت على خديجة ولقد هلكت قبل أن يتزوجني بثلاث سنين لما كنت أسمعه يذكرها ولقد أمره ربه عز وجل أن يبشرها ببيت من قصب في الجنة وإن كان ليذبح الشاة ثم يهديها إلى خلائلها

مسلم 6277صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Virtues of the Companions, may Allah be pleased with them
Chapter
Virtues of Khadijah Umm Muiminin, may Allah be pleased with her
Numbering
Darussalam 6277
Muslim 6277