Everyone who goes on a journey may not return. Do not waste things. Do not spoil your prospects of the Hereafter. The fate of man is previously ordained. Whatever is the decree of your destiny will come to pass. A trader is a gambler in some way. Sometimes scarcity may be more beneficent than plenty.
"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