Indeed, Allah commands you to render back the trusts to those, to whom they are due...
If you trust one another, then let him who is trusted fulfill his trust, and let him be conscious of God, his sustainer
And perform the trust to those who entrusted it to you, and do not betray those who betrayed you
...Allah has permitted trade and has forbidden interest.
(Yusuf) Said: You will cultivate consecutively for seven years. Leave in the ears all that you have harvested except the little out of which you may eat. Then there will follow seven years of great hardship in which you will eat up all you have stored earlier, except the little that you may set aside (stored)
Interest must not be charged or paid on any financial transaction, as interest is deemed unlawful by Shari’ah. Allah has permitted trade and has forbidden interest.
Uncertainty in contractual terms and conditions is forbidden. However, risk taking is allowed when all the terms and conditions are clear and known to all parties. Abu Hurairah (RA) reported that Prophet Muhammad (saw) forbade a transaction determined by throwing stones, and the type which involves some uncertainty.
‘Intoxicants and gambling and divining arrows are an act of abomination of Satan’s handiwork’; so avoid them, so that you attain true success
The best earning is what a man earns with his own hands and from a permissible trade
....Truly many are the partners (in business) who wrong each other’s: Not so do those who believe, and work deeds of righteousness.
If you had wished, surely you could have exacted some recompense for it.
Abdullah Ibn Umar narrated, the Prophet (peace be upon him) said: Pay the hired worker his wages before his sweat dries off.
The Prophet (peace be upon him) is reported to have said: … He who hires a person should inform him of his fee.