What is the call that Muslims must adopt?

The Shaykh : This is a long topic, but the summary is that the call that individual Muslims, their groups, and their parties must adopt is the Book and the Sunnah, following the methodology of the righteous Salaf. When you know the praise that Allah and His Messenger (peace and blessings be upon him) bestowed upon the righteous Salaf, and when you know this answer, you will know the answer to their question. Is that clear?

The questioner : Is that clear?

The Shaykh : Praise be to Allah.