O ye who believe! Eat not up your property among yourselves in vanities: But let there be amongst you traffic and trade by mutual goodwill: Nor kill (or destroy) yourselves: for verily Allah hath been to you Most Merciful!
WHAT IS THE SOURCE ?
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, Allah is Most Merciful to you.
Quran chapter 4 verse 29