Some teachings of Islam regarding money:
Contentment
Wealth is not in having vast riches, it is in contentment. (Bukhari, Muslim)
Loans
If anyone would like Allah to save him from the hardships of the Day of Resurrection, he should give more time to his debtor who is short of money, or remit his debt altogether. (Muslim)
Earning
The flesh and body that is raised on unlawful sustenance shall not enter Paradise. Hell is more deserving to the flesh that grows on one's body out of unlawful sustenance. (Ahmad)
The flesh and body that is raised on unlawful sustenance shall not enter Paradise. Hell is more deserving to the flesh that grows on one's body out of unlawful sustenance. (Ahmad)
Envy
There is no envy except in (regards to) two (people): (one is) a person whom Allah has given wealth and he spends it in the right way… (Bukhari)
Best Charity
The best charity is that which is practiced by a wealthy person. And start giving first to your dependents. (Bukhari)
Business Conduct
May Allah show mercy to a man who is kind when he sells, when he buys, and when he makes a claim. (Bukhari)
Interest
A dirham (silver coin) of Riba (interest) knowingly taken by a man is a sin worse than committing Zina (fornication/adultery) 36 times. (Ahmad, Daraqutni)
