Sura al-Baqara 2:283

وَإِن كُنتُمْ عَلَىٰ سَفَرٍ وَلَمْ تَجِدُوا۟ كَاتِبًا فَرِهَٰنٌ مَّقْبُوضَةٌ فَإِنْ أَمِنَ بَعْضُكُم بَعْضًا فَلْيُؤَدِّ ٱلَّذِى ٱؤْتُمِنَ أَمَٰنَتَهُۥ وَلْيَتَّقِ ٱللَّـهَ رَبَّهُۥ وَلَا تَكْتُمُوا۟ ٱلشَّهَٰدَةَ وَمَن يَكْتُمْهَا فَإِنَّهُۥٓ ءَاثِمٌ قَلْبُهُۥ وَٱللَّـهُ بِمَا تَعْمَلُونَ عَلِيمٌ

wa-in kuntum ʿalā safarin wa-lam tajidū kātiban farihānun maqbūḍatun fa-in amina baʿḍukum baʿḍan fa-l-yuʾaddi alladhī iʾtumina amānatahu wa-l-yattaqi allāha rabbahu wa-lā taktumū l-shahādata wa-man yaktumhā fainnahu āthimun qalbuhu wallāhu bi-mā taʿmalūna ʿalīmun

If ye are on a journey, and cannot find a scribe, a pledge with possession (may serve the purpose). And if one of you deposits a thing on trust with another, Let the trustee (Faithfully) discharge His trust, and let him fear his Lord. Conceal not evidence; for whoever conceals it,- His heart is tainted with sin. And Allah Knoweth all that ye do.