What is the way to apply the Book of Allah and the Sunnah of the Messenger of Allah (peace and blessings be upon him) in our reality?

The questioner: Does one sin ... in trade and transactions.

The Shaykh: All of this is tied to studying knowledge in the correct manner from the Book of Allah and from the hadith of the Messenger of Allah (peace and blessings be upon him), and this is the obligation of the people of knowledge; so whoever is able to study the hadith of the Messenger of Allah (peace and blessings be upon him), that is his obligation, and it is not permissible for him to study Islam by any other means, due to the many verses that came ordering us to return to the Book and the Sunnah.