Answer:

You who believe! When you take on a debt for a specified period, write it down. A writer should write it down between you justly. No writer should refuse to write; as Allah has taught him, so he should write. The one incurring the debt should dictate and should have fear of Allah his Lord and not reduce it in any way. If the person incurring the debt is incompetent or weak or unable to dictate, then his guardian should dictate for him justly. Two men among you should act as witnesses. But if there are not two men, then a man and two women with whom you are satisfied as witnesses; then if one of them forgets, the other can remind her. Witnesses should not refuse when they are called upon… (2:282)

Answer:

If the debtor is in a difficulty, grant him time Till it is easy for him to repay. But if you remit it by way of charity, that is best for you if you only knew. (2:280)

Answer:

In what your wives leave, your share is a half, if they leave no child; but if they leave a child, you get a fourth; after payment of legacies and debts. In what you leave, their share is a fourth, if you leave no child; but if you leave a child, they get an eighth; after payment of legacies and debts. If the man or woman whose inheritance is in question, has left neither ascendants nor descendants, but has left a brother or a sister, each one of the two gets a sixth; but if more than two, they share in a third; after payment of legacies and debts; so that no loss is caused (to any one). Thus is it ordained by Allah. and Allah is All-knowing, Most Forbearing. (4:12)