if you are on a journey and cannot find a scribe to write the document then transact your business on the security of a pledge in hand. and if any one transacts a piece of business with another merely on trust then the one who is trusted should fulfil his trust and fear allah his lord and never conceal evidence for he who conceals it has a sinful heart allah knows everything that you do.
وإن كنتم على سفر ولم تجدوا كاتبا فرهان مقبوضة فإن أمن بعضكم بعضا فليؤد الذي اؤتمن أمانته وليتق الله ربه ولا تكتموا الشهادة ومن يكتمها فإنه آثم قلبه والله بما تعملون عليم