Sahih Bukhari Volume 7, Book 65, Hadith Number 347.

Narrated By Anas bin Malik : A tailor invited the Prophet to a meal which he had prepared, and I went along with the Prophet. The tailor presented barley bread and soup containing gourd and cured meat. I saw the Prophet picking the pieces of gourd from around the dish, and since then I have kept on liking gourd.