Musannaf Ibn Abi Shayba 27:649

Muhammad ibn Fudayl narrated to us, from 'Umarah ibn al-Qa'qa', from Abu Zur'ah, from Abu Hurayrah, who said: I heard him saying: Gabriel came to the Prophet, may Allah bless him and grant him peace, and said: "This is Khadijah who has come to you. She has with her a vessel containing stew, or food, or drink. So when she comes to you, greet her with peace from her Lord, and give her glad tidings of a house in Paradise made of hollowed pearl, in which there is no clamor and no fatigue."