(21) باب جَوَازِ أَكْلِ الْمَرَقِ وَاسْتِحْبَابِ أَكْلِ الْيَقْطِينِ وَإِيثَارِ أَهْلِ الْمَائِدَةِ بَعْضِهِمْ بَعْضًا وَإِنْ كَانُوا ضِيفَانًا إِذَا لَمْ يَكْرَهْ ذَلِكَ صَاحِبُ الطَّعَامِ
Anas b. Malik reported that a person invited Allah's Messenger (ﷺ) to a meal. I also went along with him. He brought soup containing pumpkin. Allah's 'messenger (ﷺ) ate that pumpkin with relish. He (Anas) said:
When I saw that I began to place it before him, and did not eat it (myself). Anas said: It was since then that pumpkin was always my favourite (food).
Reference: Sahih Muslim 2041 b
In-book reference: Book 36, Hadith 200
USC-MSA web (English) reference(deprecated numbering scheme): Book 23, Hadith 5068