Musnad Ahmad 937:38

'Abd al-'Aziz ibn 'Abd al-Samad narrated to us, Abu 'Imran al-Jawni narrated to us, from 'Abd Allah ibn al-Samit, from Abu Dharr, that the Messenger of Allah (may Allah bless him and grant him peace) said to him: "O Abu Dharr, when you cook, increase the broth, and look after your neighbors, or divide it among your neighbors."