It is forbidden to help others in sin. The one who helps someone else in sin is also sinning. Not every kind of help is prohibited; rather what is prohibited is deliberate help in which the one who offers it intends to help the person in his sin, or direct help such as carrying alcohol or writing down contracts involving riba.

Hasad (destructive envy) means wishing that a blessing that Allah has bestowed on the envied person be taken away.

Characteristics of a Muslim businessman are: 1- Trade should not distract him from remembering Allah; 2- He should seek that which is permissible; 3 -He should keep away from dubious matters; 4- He should strive to be sincere and honest, and to fear Allah; 5- He should not neglect charity; 6- He should be lenient and easy-going; 7- He should give respite to one who is in difficulty, and reduce or wave his debt; 8- He should stay away prohibited transactions.