Sahih Muslim Book 23, Hadith Number 5067.

Chapter : Permissibility of eating soup and merit of eating pumpkin.

Anas b. Malik reported: A tailor invited Allah’s Messenger (may peace be upon him) to a meal which he had prepared. Anas b. Malik said: I went along with Allah’s Messenger (may peace be upon him) to that feast. He presented to Allah’s Messenger (may peace be upon him) barley bread and soup containing pumpkin, and sliced pieces of meat. Anas said: I saw Allah’s Messenger (may peace be upon him) going after the pumpkin round the dish, so I have always liked the pumpkin since that day.