`A'isha said:
I was not so jealous of any of the Prophet's wives as I was of Khadija. I never saw her, but he frequently mentioned her, and he would often kill a sheep, cut it in pieces and send, them round among Khadija's friends. I often said to him, "It seems as if Khadija was the only woman in the world," and he replied, "She was indeed a fine woman, and I had children from her."
(Bukhari and Muslim.)