How do scholars decide that something is haram?

Let's fix this as mujtahids, not scholars. Scholars only read ready-made books and try to explain what the mujtahids understood. They are like pharmacists; They apply the prescription written by the doctor.

Mujtahids, on the other hand, understand that something is haram:

- In the verse or hadith, there is a record that THIS IS HARAM.

- In the verse or hadith, the phrase "DO NOT DO, IT IS NOT, STAY AWAY FROM THIS" is used.

- The verse or hadith uses an expression that is NOT HALAL FOR YOU.

- A heavy penalty has been ordained for the person who did that job.

- The one who did that job is cursed. Mujtahids, who examine these statements, realize that it is haram and record it.