Al-Báqara 2:282 يا ايها الذين امنوا اذا تداينتم بدين الى اجل مسمى فاكتبوه وليكتب بينكم كاتب بالعدل ولا ياب كاتب ان يكتب كما علمه الله فليكتب وليملل الذي عليه الحق وليتق الله ربه ولا يبخس منه شييا فان كان الذي عليه الحق سفيها او ضعيفا او لا يستطيع ان يمل هو فليملل وليه بالعدل واستشهدوا شهيدين من رجالكم فان لم يكونا رجلين فرجل وامراتان ممن ترضون من الشهداء ان تضل احداهما فتذكر احداهما الاخرى ولا ياب الشهداء اذا ما دعوا ولا تساموا ان تكتبوه صغيرا او كبيرا الى اجله ذالكم اقسط عند الله واقوم للشهادة وادنى الا ترتابوا الا ان تكون تجارة حاضرة تديرونها بينكم فليس عليكم جناح الا تكتبوها واشهدوا اذا تبايعتم ولا يضار كاتب ولا شهيد وان تفعلوا فانه فسوق بكم واتقوا الله ويعلمكم الله والله بكل شيء عليم ٢٨٢

O you who believe, when you transact a debt payable at a specified time, put it in writing, and let a scribe write it between you with fairness. A scribe should not refuse to write as Allah has educated him. He, therefore, should write. The one who owes something should get it written, but he must fear Allah, his Lord, and he should not omit anything from it.If the one who owes is feeble-minded or weak or cannot dictate himself, then his guardian should dictate with fairness. Have two witnesses from among your men, and if two men are not there, then one man and two women from those witnesses whom you like, so that if one of the two women errs, the other woman may remind her. The witnesses should not refuse when summoned. And do not be weary of writing it down, along with its due date, no matter whether the debt is small or large. That is more equitable in Allah’s sight, and more supportive as evidence, and more likely to make you free of doubt. However, if it is a spot transaction you are effecting between yourselves, there is no sin on you, should you not write it. Have witnesses when you transact a sale. Neither a scribe should be made to suffer, nor a witness. If you do (something harmful to them), it is certainly a sin on your part, and fear Allah. Allah educates you, and Allah is All-Knowing in respect of everything.