Sahih Muslim Book - 53, Hadith - 7517

سِرْنَا مَعَ رَسُولِ اللَّهِ -صلى الله عليه وسلم- وَكَانَ قُوتُ كُلِّ رَجُلٍ مِنَّا فِى كُلِّ يَوْمٍ تَمْرَةً فَكَانَ يَمَصُّهَا ثُمَّ يَصُرُّهَا فِى ثَوْبِهِ وَكُنَّا نَخْتَبِطُ بِقِسِيِّنَا وَنَأْكُلُ حَتَّى قَرِحَتْ أَشْدَاقُنَا فَأُقْسِمُ أُخْطِئَهَا رَجُلٌ مِنَّا يَوْمًا فَانْطَلَقْنَا بِهِ نَنْعَشُهُ فَشَهِدْنَا أَنَّهُ لَمْ يُعْطَهَا فَأُعْطِيَهَا فَقَامَ فَأَخَذَهَا.

(Jabir continued:) We traveled with the Messenger of Allah (s.a.w) and the food for each man among us, every day, was one date, which he would suck and then wrap it in his garment. We would also knock down leaves with our bows and eat them, until the corners of our mouths were covered with ulcers. One day a man was overlooked when the dates were distributed, and we set out carrying him, and we bore witness that he had not been given his date, then he was given it, and he stood up and took it.