Sahih Bukhari Volume 3, Book 47, Hadith 2487

حَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، حَدَّثَنَا حَمَّادُ بْنُ أُسَامَةَ، عَنْ بُرَيْدٍ، عَنْ أَبِي بُرْدَةَ، عَنْ أَبِي مُوسَى، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ إِنَّ الأَشْعَرِيِّينَ إِذَا أَرْمَلُوا فِي الْغَزْوِ، أَوْ قَلَّ طَعَامُ عِيَالِهِمْ بِالْمَدِينَةِ جَمَعُوا مَا كَانَ عِنْدَهُمْ فِي ثَوْبٍ وَاحِدٍ، ثُمَّ اقْتَسَمُوهُ بَيْنَهُمْ فِي إِنَاءٍ وَاحِدٍ بِالسَّوِيَّةِ، فَهُمْ مِنِّي وَأَنَا مِنْهُمْ ‏"‏‏

Narrated By Abu Musa : The Prophet said, "When the people of Ash'ari tribe ran short of food during the holy battles, or the food of their families in Medina ran short, they would collect all their remaining food in one sheet and then distribute it among themselves equally by measuring it with a bowl. So, these people are from me, and I am from them."