Sahih Muslim Book - 43, Hadith - 5946

وَحَدَّثَنِي سَلَمَةُ بْنُ شَبِيبٍ ، حَدَّثَنَا الْحَسَنُ بْنُ أَعْيَنَ ، حَدَّثَنَا مَعْقِلٌ ، عَنْ أَبِي الزُّبَيْرِ ، عَنْ جَابِرٍ ، أَنَّ رَجُلاً أَتَى النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَسْتَطْعِمُهُ ، فَأَطْعَمَهُ شَطْرَ وَسْقِ شَعِيرٍ ، فَمَا زَالَ الرَّجُلُ يَأْكُلُ مِنْهُ وَامْرَأَتُهُ وَوَصِيفُهُمَا، حَتَّى كَالَهُ ، فَأَتَى النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ : لَوْ لَمْ تَكِلْهُ لأَكَلْتُمْ مِنْهُ ، وَلَقَامَ لَكُمْ.

It was narrated from Jabir that a man came to the Prophet (s.a.w) and asked him for food. He gave him half a Wasq of barley and the man, his wife and their guest continued to eat from it until he weighed it. He came to the Prophet (s.a.w) who said: “If you had not weighed it, you would still be eating from it, it would still be there.”