Volume 7 · Book 65 · Hadith 344
Narrated Anas: Allah's Apostle went to (the house of) his slave tailor, and he was offered (a dish of) gourd of which he started eating. I have loved to eat gourd since I saw Allah's Apostle eating it.
— Sahih Bukhari, Volume 7, Book 65: Food, Meals, Hadith #344