Musnad Abu Ya'la al-Mawsili 115:165

Muhammad narrated to us, Muhammad narrated to us, Shu'bah narrated to us, from Qatadah, from Anas: The Messenger of Allah (may Allah bless him and grant him peace) used to love pumpkin. He said: So food was brought, or he was invited to it. Anas said: So I began to follow it and place it before him, because I knew that he loved it.