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

You who believe, when you contract a debt for a stated term, put it down in writing: have a scribe write it down justly between you. No scribe should refuse to write: let him write as God has taught him, let the debtor dictate, and let him fear God, his Lord, and not diminish [the debt] at all. If the debtor is feeble-minded, weak, or unable to dictate, then let his guardian dictate justly. Call in two men as witnesses. If two men are not there, then call one man and two women out of those you approve as witnesses, so that if one of the two women should forget the other can remind her. Let the witnesses not refuse when they are summoned. Do not disdain to write the debt down, be it small or large, along with the time it falls due: this way is more equitable in God’s eyes, more reliable as testimony, and more likely to prevent doubts arising between you. But if the merchandise is there and you hand it over, there is no blame on you if you do not write it down. Have witnesses present whenever you trade with one another, and let no harm be done to either scribe or witness, for if you did cause them harm, it would be a crime on your part. Be mindful of God, and He will teach you: He has full knowledge of everything.