A person should not eat his fill without seeing to his

Al-Adab Al-Mufrad · Book 6 · Hadith 112

حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، قَالَ‏:‏ أَخْبَرَنَا سُفْيَانُ، عَنْ عَبْدِ الْمَلِكِ بْنِ أَبِي بَشِيرٍ، عَنْ عَبْدِ اللهِ بْنِ الْمُسَاوِرِ قَالَ‏:‏ سَمِعْتُ ابْنَ عَبَّاسٍ يُخْبِرُ ابْنَ الزُّبَيْرِ يَقُولُ‏:‏ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ‏:‏ لَيْسَ الْمُؤْمِنُ الَّذِي يَشْبَعُ وَجَارُهُ جَائِعٌ‏.‏

Ibn 'Abbas informed Ibn az-Zubayr, "I heard the Prophet, may Allah bless him and grant him peace, say, 'He is not a believer whose stomach is filled while his neighbor goes hungry.'"