It was narrated that 'Aishah said:
"I never felt as jealous of any woman as I did of Khadijah, because I saw how the Messenger of Allah remembered her, and his Lord had told him to give her the glad tidings of a house in Paradise made of Qasab." (ID)
English reference (ID): Vol. 3, Book 9, Hadith 1997 (ID)
Arabic reference (ID): Book 9, Hadith 2075 (ID)