Al-Baqarah 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 contract a debt for a fixed period, write it down. Let a scribe write it down in justice between you. Let not the scribe refuse to write as Allâh has taught him, so let him write. Let him (the debtor) who incurs the liability dictate, and he must fear Allâh, his Lord, and diminish not anything of what he owes. But if the debtor is of poor understanding, or weak, or is unable to dictate for himself, then let his guardian dictate in justice. And get two witnesses out of your own men. And if there are not two men (available), then a man and two women, such as you agree for witnesses, so that if one of them (two women) errs, the other can remind her. And the witnesses should not refuse when they are called (for evidence). You should not become weary to write it (your contract), whether it be small or big, for its fixed term, that is more just with Allâh; more solid as evidence, and more convenient to prevent doubts among yourselves, save when it is a present trade which you carry out on the spot among yourselves, then there is no sin on you if you do not write it down. But take witnesses whenever you make a commercial contract. Let neither scribe nor witness suffer any harm, but if you do (such harm), it would be wickedness in you. So be afraid of Allâh; and Allâh teaches you. And Allâh is the All-Knower of each and everything.