Musannaf Ibn Abi Shaybah

Hazrat Masruq (may Allah have mercy on him) narrates that Hazrat Aisha (may Allah be pleased with her) said: When Hazrat Abu Bakr (may Allah be pleased with him) fell ill with the illness from which he passed away, he said: You people should see that whatever increase has occurred in my wealth after I became the caliph, send that wealth to the caliph who comes after me. Indeed, I considered this wealth lawful and permissible for myself. And indeed, I gained as much benefit from this wealth as I used to gain from trade. Hazrat Aisha (may Allah be pleased with her) says: When we looked, there was an addition of an Egyptian slave in his wealth who used to look after the children, and a water carrier who used to bring water for him from the well. Both of them were sent to Hazrat Umar (may Allah be pleased with him). She (may Allah be pleased with her) says that my agent informed me that Hazrat Umar (may Allah be pleased with him) wept and said: May Allah have mercy on Abu Bakr (may Allah be pleased with him). Indeed, he has put those after him into great hardship.