Contracted Debt

If you are on a journey and cannot find a scribe, then a security deposit should be taken. If one entrusts another, let the trustee fulfil their trust and fear Allah, their Lord. Do not conceal testimony, for whoever does so has a sinful heart.

2:283If ye be on a journey and cannot find a scribe, then a pledge in hand (shall suffice). And if one of you entrusteth to another let him who is trusted deliver up that which is entrusted to him (according to the pact between them) and let him observe his duty to Allah his Lord. Hide not testimony. He who hideth it, verily his heart is sinful. Allah is Aware of what ye do.