-Prohibition of unlawful money
-Encouragement of mutual business
-Preserve life and do not commit suicide, Allah has been so merciful to you
-Be grateful each day, especially during times of hardship. Positive thoughts guard against depression

Verse:

“O you who believe! Eat not up your property among yourselves unjustly except it be a trade amongst you, by mutual consent. And do not kill yourselves (nor kill one another). Surely, Allâh is Most Merciful to you.”

[Surah An-Nisā (The Women) verse 29]