The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada'il Al-Sahabah)
Muslim :: Book 31 : Hadith 5967
Abu Huraira reported that Gabriel came to Allah's Apostle (may peace be upon him) and said: Allah's Messenger, lo. Khadija is coming to you with a vessel of seasoned food or drink. When she comes to you, offer her greetings from her Lord, the Exalted and Glorious, and on my behalf and give her glad tidings of a palace of jewels in Paradise wherein there is no noise and no toil. This hadith has been narrated on the authority of Abu Huraira through another chain of transmitters with a slight variation of wording.