Allah commands writing down a debt that is for a fixed time (2:282) and says that if a person is in hardship, there should be a postponement until things are easy, and to forgive is better (2:280). The Prophet ﷺ said that the delay of a wealthy person in paying his debt is injustice and that the soul of the believer is held back by his debt until it is paid.
1For the borrower
Repay on time, and when he is able, repay at once. A wealthy person who delays is unjust.
Borrow only when needed, and with the intention to repay.
Repay with something equal, or better with no stipulation (the Prophet ﷺ repaid with better than he took).
Write down debts in a will, because a debt remains owed after death and is paid from the estate before the inheritance is divided.
2For the lender
Write the debt and its date, and have witnesses.
Be patient with the one in difficulty and, if possible, forgive some or all of it.
Take nothing extra as a condition, because that is riba.
3The one who cannot pay
He is given time until his circumstances improve. Imprisoning or harming him is not allowed.
A person in debt is among the eight categories who can receive zakat (9:60).
Where the schools differ
The four Sunni schools agree on the main ruling above and differ in these points. No school is preferred here.
A debtor who is able to pay but delays may be compelled to pay by the judge. One who truly cannot pay must be given time, and is not imprisoned.
O you who have believed, when you contract a debt for a specified term, write it down. And let a scribe write [it] between you in justice. Let no scribe refuse to write as Allah has taught him. So let him write and let the one who has the obligation dictate. And let him fear Allah, his Lord, and not leave anything out of it. But if the one who has the obligation is of limited understanding or weak or unable to dictate himself, then let his guardian dictate in justice. And bring to witness two witnesses from among your men. And if there are not two men [available], then a man and two women from those whom you accept as witnesses - so that if one of the women errs, then the other can remind her. And let not the witnesses refuse when they are called upon. And do not be [too] weary to write it, whether it is small or large, for its [specified] term. That is more just in the sight of Allah and stronger as evidence and more likely to prevent doubt between you, except when it is an immediate transaction which you conduct among yourselves. For [then] there is no blame upon you if you do not write it. And take witnesses when you conclude a contract. Let no scribe be harmed or any witness. For if you do so, indeed, it is [grave] disobedience in you. And fear Allah. And Allah teaches you. And Allah is Knowing of all things.
And if someone is in hardship, then [let there be] postponement until [a time of] ease. But if you give [from your right as] charity, then it is better for you, if you only knew.
From the Sunnah
Sahih al-Bukhari 2287Authentic collection
The point of the hadith: A wealthy person who delays paying his debt does injustice.
Read the Arabic text
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَطْلُ الْغَنِيِّ ظُلْمٌ، فَإِذَا أُتْبِعَ أَحَدُكُمْ عَلَى مَلِيٍّ فَلْيَتْبَعْ ".
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Fiqh questions
Debts: writing them, repaying them and being patient
Allah commands writing down a debt that is for a fixed time (2:282) and says that if a person is in hardship, there should be a postponement until things are easy, and to forgive is better (2:280). The Prophet ﷺ said that the delay of a wealthy person in paying his debt is injustice and that the soul of the believer is held back by his debt until it is paid.
Is this a fatwa?
No. It is a summary of well-known rulings with their evidence. For your own case, ask a qualified scholar.
What if my school differs from this answer?
Follow the view of the school you follow and the scholar who teaches you. The page lists the differences of the four schools.