Hadithcore
Al-Adab Al-Mufrad, 576
hasan· Al-Albani

Abu Dhubyan related that 'Umar ibn al-Khattab asked him, "Abu Dhubyan, how large is your (soldier's) stipend?" "2500," he replied. He told him, "Abu Dhubyan, it was taken from agriculture and increased livestock before the lads of Quraysh were appointed over you. They do not consider the stipend to be income."

حَدَّثَنَا قَبِيصَةُ، قَالَ‏:‏ حَدَّثَنَا وَهْبُ بْنُ إِسْمَاعِيلَ، عَنْ مُحَمَّدِ بْنِ قَيْسٍ، عَنْ أَبِي هِنْدَ الْهَمْدَانِيِّ، عَنْ أَبِي ظَبْيَانَ قَالَ‏:‏ قَالَ لِي عُمَرُ بْنُ الْخَطَّابِ‏:‏ يَا أَبَا ظَبْيَانَ، كَمْ عَطَاؤُكَ‏؟‏ قُلْتُ‏:‏ أَلْفَانِ وَخَمْسُمِئَةٍ، قَالَ لَهُ‏:‏ يَا أَبَا ظَبْيَانَ، اتَّخِذْ مِنَ الْحَرْثِ وَالسَّابْيَاءِ مِنْ قَبْلِ أَنْ تَلِيَكُمْ غِلْمَةُ قُرَيْشٍ، لاَ يُعَدُّ الْعَطَاءُ مَعَهُمْ مَالاً‏.‏

References2 variants
In-Book Reference
Book 30, Hadith 39
English Reference
Book 30, Hadith 576