Sayyidah Aishah (may Allah be pleased with her) said: When Sayyiduna Umar (may Allah be pleased with him) was made caliph, he and his family ate (from it), and he did business with his own wealth.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13007