Data Ganj Bakhsh observes in his book Kashful Mahjub that Uthman possessed four hundred slaves, but one day he was found coming forth from his plantation of date prams carrying a bundle of firewood on his head.
He was asked why he was carrying the bundle himself and
why he had not allowed any of his slaves to carry the burden,
he said that by carrying the load himself he was making a
trial of himself.
It is also related that during nights he would not disturb any of his servants to help him in making the ablutions, or attending to other needs. When asked the reason for that he said that the night was meant for their repose.
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari