Sayyidah Aishah (may Allah be pleased with her) said: When Sayyiduna Abu Bakr (may Allah be pleased with him) was made caliph, he said: My people know that my trade was sufficient for the provision of my family, and now I have been made ruler over the Muslims; so the family of Abu Bakr will now eat from this (wealth), and Abu Bakr will keep working to increase the Muslims' wealth.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13006