Surah 2

Surah 2:283

"And if you are on a journey, and do not find a scribe, (let) a security be taken. But if one of you trusts another, let him who is trusted pay back what is entrusted, and let him guard (himself) against God his Lord. Do not conceal the testimony. Whoever conceals it, surely he is sinful – (that is) his heart. God knows what you do."