Do those who administer and sell drugs and herbs as cures for serious illnesses without proper study, thereby endangering people's lives and causing death, fall under the meaning of Allah's saying: "and they strive throughout the land [causing] corruption," and His saying: "that whoever kills a soul unless for a soul or for corruption [done] in the land - it is as if he had slain mankind entirely"? And what is the Shar'i (Islamic legal) ruling concerning them?

Firstly: The meaning of Allah Almighty's saying: (Whoever kills a soul unless for a soul or for corruption [done] in the land - it is as if he had slain mankind entirely. And whoever saves one - it is as if he had saved mankind entirely) is the killing of a soul that Allah has forbidden. And whoever deems the shedding of a Muslim's blood lawful, it is as if he has deemed the shedding of all people's blood lawful. And whoever deems the shedding of a Muslim's blood unlawful (i.e., sacred), it is as if he has deemed the shedding of all people's blood unlawful (i.e., sacred). The killer's audacity to kill a soul unjustly is tantamount to killing all people.

Secondly: The verse (Indeed, the penalty for those who wage war against Allah and His Messenger and strive upon earth [to cause] corruption) speaks of highway robbers and mischief-makers who frighten people and seize their wealth. It does not apply to everyone who causes corruption or aggression. The ruling in it is specific to those who challenge Allah and His Messenger with enmity and spread corruption in the land by making roads unsafe.

Thirdly: A person who prescribes medications and drugs without expertise and, due to his ignorance, causes the death of a soul, is obligated to pay the blood money (diyah) or compensation for the injury, because he is transgressing with his action. However, he is not an intentional killer and is not subject to retribution (qisas).