Is a pharmacist obligated to pay for medications that have not been reimbursed to him due to buyers defaulting on payment? What is the ruling for one who does so? And what should he do regarding the money he did not pay in a previous job?

The pharmacist acts as a private employee and an agent. The owner of the pharmacy is the reference for all transactions. If the pharmacist permits selling without immediate cash payment, or releasing medications without a pledge or payment, there is no blame on him, and he is not liable unless there is transgression or negligence. However, if the owner does not permit this, then the condition must be adhered to. If the pharmacist violates the condition, he is negligent and liable.

If the pharmacy owner neither permitted nor prohibited, then jurists have differed regarding the permissibility of an agent selling on credit (deferred payment). The Malikis, Shafi'is, and Hanbalis prohibited it, while the Hanafis permitted it under specific conditions.

Therefore, the pharmacist is held liable by most jurists. If the pharmacist is excused due to injustice inflicted upon him by the pharmacy owner, he may exercise muqassah (offsetting debts) if he cannot otherwise secure his right.

Indeed, a stern warning has been issued against those who take people's wealth and do not return it, stating that Allah will destroy them.