BUSINESS
- be fair in dealings, an-Nisa' 4:58; al-An`am 6:152; bani Isra'il 17:35; ash-Shu`ara' 26:181-182; ar-Rahman 55:8-9; at-Tatfif 83:1-3
- don't cheat trading partner,
an-Nisa' 4:29
- punishment for, an-Nisa' 4:30
- record credits and debts in writing, al-Baqarah 2:282